How BMW is lowering its diesel truck CO2 emissions by 50%
How do you make a long-haul diesel truck emit 50% less CO2 without changing a single thing about it? Sounds like a riddle, right? A new pilot solution embraced by BMW Group Logistik and supplied by partner firm Trailer Dynamics here in Germany, though, can do just that. I spoke with Mo Koellner from BMW and Michael Nimtsch from Trailer Dynamics about this tech on a call earlier in the week.
As to the answer to the above riddle: This is a semi-truck trailer that has a massive battery pack (up to 600 kWh) installed in its floor, and that battery powers an electrically driven axle underneath the trailer. The solution isn’t conceptually novel; e-trailers, or electrified trailers, have been on the market in various forms for a number of years now (though the technology is still in a relative stage of infancy). The basic principle is simple, too. By adding a battery-electric driven power source to a diesel tractor-trailer, you reduce the fuel consumption of the diesel portion of the system. In other words, you’ve created a plug-in hybrid-electric big rig. Pretty straightforward, yeah?
What makes Trailer Dynamics’ solution cool is just how “plug and play” it is. In fact, the company says that its electric trailers can work with any truck they are physically capable of hitching to. No trailer-to-truck connection is utilized; the e-trailer operates totally independently. Trailer Dynamics says this makes its product unique* in the space, as most other e-trailer solutions require active communication with the connected truck to enable the electric-assisted drive. BMW is currently testing TD’s solution on its BMW Group Logistik fleet. (*US-based Range Energy also claims to work with basically any truck, and their solution seems quite similar to Trailer Dynamics. We covered them back in May. The biggest distinction I’ve seen is that Trailer Dynamics offers far larger batteries and is designed for use with European tractor-trailer configurations. BMW’s fuel consumption figures also seem to indicate TD’s solution may be more efficient, but it’s hard to know how apples-to-apples these numbers are given the pack size differences.)
The way TD achieves this is down to a proprietary sensor pack that lives in the kingpin of the trailer. There, a computer control model takes input from the sensors (used to monitor various forces on the kingpin) and converts that data into a decision about when and how much power to apply to the electric motors in the axle. The logic of the system takes into account the sort of things you’d expect. For example, if the trailer knows the truck is currently stopped and is beginning a start — when large trucks tend to make use of their fuel most inefficiently — it will apply very substantial power to get the truck rolling. The result is a huge reduction in the amount of diesel used. Similarly, if the system detects the truck is going uphill, electric assist will be applied generously to minimize the effects of an otherwise high fuel consumption situation. According to TD’s website, factors like weather conditions, route topography, and traffic can also be considered, though it was less clear to me how these play in to when the trailer applies power. The system can also be configured to disable itself if the battery capacity reaches a predefined cutoff point (important, as fleet operators ideally want a minimum level of charge guaranteed at any moment).
The system itself is, by the standards of passenger electric vehicles, some very heavy-duty stuff. Battery packs of either 400 kWh or 600 kWh are employed (a 200 kWh unit is coming later), with the 600 kWh configuration being the most desirable among TD’s prospective customers. That’s because the economics of efficiency apparently pay off best for longer routes, where a larger battery is going to be necessary. The electric motor unit outputs up to 580 kW (777 hp), which is impressive, but it’s the insane 13,000 nm of torque that’s doing the heavy lifting (literally). Charging is also pretty damn quick, with the 800V architecture supporting 44 kW AC and up to 350 kW DC fast charging. The supersized figures here make sense when you consider the weights at play — BMW is testing TD’s trailers with a payload of 16 metric tonnes, or over 35,000 pounds. (Specifically, BMW has been using them to haul electric drive units for its passenger cars.)
As for the end efficiency, BMW is seeing fuel consumption lowered by nearly 50% on some of the long-haul routes it’s testing, meaning emissions on those routes are cut in half. Even on shorter routes, the figure is in excess of 45% fuel savings. Because BMW is using 100% carbon-neutral sources to recharge the trailer batteries, it estimates that each e-trailer could cut up to 120 tonnes of CO2 emissions from its fleet each year. For comparison, assuming a “typical” ICE car emits around 5 tonnes of CO2 annually, each trailer optimally utilized is like taking 60 cars off the road. All that is to say: It’s hard to overstate how much fuel a real big truck uses.
BMW has also been testing TD’s trailers with electric trucks, where the system effectively acts as a range extender. Depending on the specific truck, payload, and route, BMW says the range of an electric truck could be extended by a factor of 2-3x, opening up entirely new scenarios for the use of BEV tractor units. In one test, BMW used an unspecified Volvo e-truck in combination with a TD mega trailer to go over 600 km (373 miles) without recharging.
In a perfect world, diesel trucks would be replaced with electric ones wholesale. But in reality, the design principle of trucks as long-life assets means that ICE trucking will stick around a fair bit longer than combustion passenger cars. If we can reach a point where e-trailer systems like Trailer Dynamics’ are minimizing trucking fuel consumption at scale, though, we can still have a real net-positive impact on emissions while that transition occurs. And because this kind of system benefits both ICE and EV tractors (arguably, the latter even more so), this is a scenario where the hybrid step-transition makes much more sense. There’s nothing redundant being engineered here for the sake of ICE trucks; these trailers will retain their usefulness in the age of BEV trucking.
For BMW, the EV trucking side of the equation has an added bonus — the low-liner “mega trailer” configuration it uses for a large amount of its transport fleet greatly limits the range of available EV truck options. Using TD’s mega trailer solution as a range extender is thus an excellent way to work around that challenge. (Mega trailers are a high-capacity trailer class specifically developed for use in the EU, where they remain extremely popular. These space-maximized trailers require a particular class of truck chassis with a very low deck floor for towing, and that leaves very little room for a battery.)
As for the challenges of stuffing a massive battery in the bottom of an already super-heavy-laden trailer? They’re not nonexistent. According to BMW, TD’s solutions are best for shipping in “cubed out” configurations — that is, utilizing the maximum volume of a container, not its maximum weight. And sure, the battery cannibalizes some of the available space for cargo. But, over time and with the evolution and refinement of the system (weight reduction is one of TD’s immediate goals), greater and greater payloads will become feasible. Human behavior is another big factor to consider. Suppose a tractor operator is still driving like a leadfoot. In that case, it’s possible to mitigate a fair bit of the system’s fuel savings (BMW saw fuel consumption variability of up to 20% during testing based on driver). On the economics, BMW believes that e-trailers will significantly lower fleet operating costs, offsetting initially higher acquisition costs for the equipment.
Down the road, TD suggests it could also start using its tech to assist in the on-road safety of tractor-trailers, applying power or engine braking force for stability management (for example, if a truck is in danger of jackknifing). Right now, the company is just getting started, and currently has seven trailers in operation (an eighth was just delivered).
While cleaning up our passenger cars will have a real effect on global CO2 emissions, the impact of trucking transport is something we should all be considering, too. According to data from the IEA, road freight accounts for 30% of all global transportation emissions, making it the second-largest contributor behind passenger vehicles — and by a wide margin. (For comparison, all air and sea transit contribute just above 10% of global emissions each. Rail sits at a measly 1%.)
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Mark Kay’s iconic Pink Cadillac awards are driving into the future for 2025. The company’s first-ever electric Pink Cadillac OPTIQ made its debut during the Mary Kay annual Seminar in Charlotte this weekend, symbolizing a “recharged vision” for the future of the popular brand.
Pioneers in monetizing friendships female empowerment and entrepreneurship, the Pink Cadillac is considered one the most coveted symbols of achievement for Mary Kay sales reps, signifying not just great sales (GM Authority reported that it took ~$102,000 in annual sales to qualify back in 2001), but also leadership, a history of mentoring others, and a sustained reputation of excellence among their peers.
The women you see behind the wheel of the Pink Cadillac are the real deal, in other words, and the big Caddy really does mean something to people in the know.
The iconic pink Cadillac was born in 1968 when Mary Kay Ash purchased a Cadillac Coupe De Ville from a Dallas dealership and promptly had it painted to match the pale pink Mary Kay lip and eye palette. General Motors later named the color Mary Kay Pink Pearl, and the shade is exclusive to Mary Kay.
MARY KAY
Now, the Pink Cadillac is going to stand for environmental sustainability, too, enabling Mary Kay’s top performers to set yet another positive example for anyone aspiring to their success.
“For decades, the Mary Kay pink Cadillac has symbolized accomplishment, aspiration, and the power of recognition,” said Ryan Rogers, Chief Executive Officer of Mary Kay. “With the introduction of the all-electric OPTIQ, we’re honoring that iconic legacy while driving into a transformative future—one grounded in our commitment to sustainability and dedication to inspiring and celebrating the achievements of our independent sales force for generations to come.”
Mary Kay announced its new Pink Cadillac with this video, below.
Same Legacy, New Energy
“The legacy continues with the new, all-electric (and still very pink) Cadillac Otiq [sic],” reads the official Mary Kay copy on YouTube. “The Optiq remains instantly recognizable with the pink pearl exterior, while modernizing with sleek, cutting-edge features. In addition, this vehicle showcases our commitment and dedication to sustainability by reducing our carbon footprint while continuing to inspire.”
Speaking of inspiration, I can’t hardly hear the words “Pink Cadillac” without thinking of the song. But, since “Bruce Springsteen” has become something of a trigger word for the MAGA snowflakes in the audience, I’ll post a different, but similarly great song about rose-tinted GM flagships from Dope Lemon. You can let me know what you think of it in the comments.
As ever, the Cadillac is not a “gift,” per se – but typically takes the form of a two year lease paid for by Mary Kay. No word yet on what the exact shape and form the OPTIQ deal will take.
Electrek’s Take
Whatever you might think of MLMs or businesses like Amway, Avon, or Mary Kay, they play a big part in the social dramas of hundreds (if not thousands) of neighborhoods and online communities. The people at the top are influential, and the people “below” them genuinely try to emulate them and follow their lead.
Thanks to Mary Kay, that might soon mean a decision to buy an electric vehicle – and that result would be a win for everyone.
SOURCE | IMAGES: Mary Kay.
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RBW, a British handcrafted electric car manufacturer, brought its cute little Roadster out to Santa Monica and invited us up for a drive.
RBW has built cars in the UK for a few years now, but is about to set up US manufacturing in Virginia. Along with that comes a version of its Roadster modified for the US market, and we got a sneak peek with a short drive in Santa Monica.
The RBW Roadster is a small, hand-built, retro-style EV, meant as a modern take on British classics. But it’s not an actual classic itself – it’s a newly-built vehicle, with a new body, modern safety features, and even some electronics, like CarPlay and Android Auto (but not much else – there’s no huge, cockpit-defining screen, just a 9″ one, with retro gauges in front of the driver. But it does have a backup camera!).
Our drive was short, just a quick trip up and down the most trafficky part of Pacific Coast Highway in Santa Monica, without much chance to really stretch the vehicle’s legs. So we can’t verify range or tell you how it handles on the limits, but we can tell you about the basic controls and feel of the vehicle.
On a mostly smooth road, the car offered a comfortable ride dynamic. We didn’t get a sense of chassis noise because the top was down (which I surmised was an intentional effort by the company – I’ve used the same trick when showing off my car before).
The steering is tight and has a good weight to it, and the retro-style steering wheel felt great in my hands.
Of particular interest to me, as a long-time EV driver, is how the throttle pedal is tuned. Lots of EVs add some intentional delay or smoothing to throttle inputs, which ends up making the pedal feel mushy and indirect, reducing the control you have over the vehicle.
For reference, the cars I drive most often are the Tesla Roadster and Model 3, which both have excellent direct pedal feel.
And I’m happy to report that the RBW Roadster’s throttle pedal feels very similar to the cars I love to drive. The car feels quick, and responds exactly to what I want it to do, when I want it to do it. But it’s not excessively “punchy” like some of the more absurdly-powered EVs can be (like the Tesla Model S Plaid or the Macan Turbo S).
It does not, however, have off-throttle regenerative braking, aka one-pedal driving. Pressing the brake pedal engages regen, but letting off the throttle lets you simply coast. I personally prefer one-pedal driving, but one consideration RBW had is that since the car does not have traction control, regenerative braking on the rear axle (where the motor is) could potentially present a safety issue on slippery roads. So, fair enough I guess, but I still do prefer one pedal.
Speaking of pedals, the brake pedal was placed quite far from the accelerator. This is a plus and a minus – a minus because it’s quite different from most vehicles these days, where the pedals are placed closer, for ease of reaching them with your right foot. A plus because higher separation might reduce the chance of “crossing the pedals” and accidentally pressing both with the same foot in an emergency situation, and because it enables left-foot braking, which is generally better for performance driving… in the hands of a trained driver, anyway.
That said, this isn’t exactly a performance car. It’s fun, it’s responsive, but it’s not powerful. The version we tested had a 0-60 time of only around 9 seconds, so it didn’t give you the “throw your head back” feeling that so many EVs on the road these days do. It’s responsive, but not fast.
RBW says the American version will have more motor power than the UK version, but it’s still trying to figure out exactly how to tune it. This should bring 0-60 times down by about a second. But we can’t help but think that it would be nice with even a little more power than that, which we think should be possible given the car’s 50kWh battery and ~2,900lb weight, specs that are similar to my similarly-sized Tesla Roadster (as you can see below – along with the GT version of the RBW, on the right).
Here’s an issue: all the specs we were given seem extremely fluid. While talking to the company, I got several different numbers for any given specification. It seems to me like the company is still figuring out exactly what changes it will make for its US models.
This is somewhat to be expected of a small, hand-built manufacturer, especially since buyers can ask for certain modifications or personalizations (seat height, for example, which is important in a small car like this). But it does make it tough to write an article about it.
Nevertheless, the car drives well, and RBW seems to have gotten a lot right about the dynamics of the vehicle. It executes well on its goal – a fun, small British-style roadster, a great weekend car for those who have the means.
As for the means, the RBW Roadster will start in the $140-150k range, so it’s not cheap. But if you’re looking for something like this, it’s just about the only game in town, and it’s a good execution of the feel of a nimble roadster for weekend cruising.
RBW is currently taking $1,000 reservations for 2026 builds, and you can have a look at configurations (paint, roof, interior, wheels) over on its website.
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Canadian startup Beachman has just unveiled its latest electric two-wheeler, the ’64, a vintage-styled electric motorcycle that looks like it rolled straight out of the 1960s. With throwback café racer design and a respectable top speed of 45 mph (72 km/h), it’s a slick little ride with a curious twist: it calls itself an e-bike.
It’s not just a casual reference, but it’s baked into the name. The full model name on Beachman’s website is the ’64 E-Bike.
While I’d generally be inclined to give them the benefit of the doubt, since many motorcyclists refer to electric motorcycles as “e-bikes” and the term has a broad definition in colloquial usage, the company is obviously casting more in the “electric bicycle” end of the spectrum. They even say on their website that it is “rideable as either a Class II E-Bike or a Registered Moped (in most states).”
Despite lacking pedals entirely – and clearly designed more like a lightweight electric motorcycle – the Beachman ’64 comes with a selectable “E-Bike Mode” that limits it to 20 mph (32 km/h). The implication? That riders can use this obvious motorcycle in bike lanes like a Class 2 e-bike. Legally speaking, that’s a stretch, to put it mildly. In fact, I’m not currently aware of any state where that’s explicitly legal, though it could probably pass in many states due to the current state of enforcement we usually see.
According to Beachman, the ’64 has three ride modes:
- E-Bike Mode: 20 mph (32 km/h) top speed, which the company says is “perfect for bike lanes.”
- Moped Mode: 30 mph (48 km/h) top speed, which does match legal definitions for mopeds in some jurisdictions, even without pedals.
- Off-Road Mode: 45 mph (72 km/h) top speed, no pretense – just a motorcycle.
In practice, I don’t think it’s a stretch of the imagination to assume that most riders will likely keep it in Off-Road Mode, where the bike delivers its full 3,000W performance and offers the most fun. And specced with decently large batteries, it could actually do some modest commuting, even at higher speeds. The ’64 comes with a removable 2.88 kWh battery (or optional 3.6 kWh upgrade), and range is estimated at 55–70 miles, depending on configuration. It charges to 80% in three hours and even features regenerative braking.
The company leans heavily on its “timeless design” messaging, and to their credit, the ’64 nails the aesthetic. It looks great. The frame, tank, and seat all channel classic motorcycle vibes while skipping the modern digital overload – no apps or touchscreens here. Just a clean, simple throttle and some retro charm.
But for all the cool factor, the classification confusion raises eyebrows. Calling a 45 mph, pedal-less motorcycle an “e-bike” in any meaningful legal sense is a misfire. Some states allow low-speed mopeds in bike lanes, but others draw the line at motorized vehicles without pedals. The ’64 might get away with it in limited cases, but most jurisdictions will (rightfully) require it to be registered and insured as a motor vehicle. And it’s unclear if explaining to the officer, “But I had it in 20 mph mode…” will help much on the side of the road.
Still, Beachman is aiming at a particular rider who wants motorcycle style and speed without all the baggage. With a starting price of $4,800, the ’64 could be an appealing step-up for e-bike riders looking to graduate into something faster without committing to a full-sized gas bike.
Just don’t expect to blend in on the bike path.
Electrek’s Take
Look: The bike looks fantastic and probably rides well, but come on, it’s a 230 lb (105 kg) motorcycle.
Let’s stop calling every throttle-only EV an e-bike just because it’s got two wheels, a battery, and a button that neuters it to 20 mph. This has gotten silly. You built a great-looking bike. But it’s a bike in the way a motorcycle rider refers to his “bike.” It’s not a bicycle, and it’s not a bike lane vehicle any more than a Sur Ron is. At least not if you respect your fellow two-wheel riders around you.
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