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GM executive chief EV engineer says reducing cost of plug-in vehicles is 'huge priority'

As we know, another major automaker investing heavily in electrified vehicles is General Motors, and it's doing things much differently than rivals BMW, Ford or Nissan. The Chevrolet Volt extended-range EV is a modest seller at its $35,000 sticker price but a huge hit with owners. The Chevy Spark BEV, still in limited availability, puts smiley faces on its owners and drivers. The just-introduced Cadillac ELR, a sharp-looking, fun-driving $76,000 luxocoupe take on the Volt's EREV mechanicals, has admittedly low sales expectations. With this interesting trio in showrooms and much more in the works, the third vehicle electrification leader I collared for an interview at Detroit's North American International Auto Show (see #1 and #2) was Pam Fletcher, GM's executive chief engineer, Electrified Vehicles. ABG: Why do your EREVs need four-cylinder power to extend their range when BMW's i3 makes do with an optional 650 cc two-banger? "We designed [the Volt and the ELR] to go anywhere, any time" - Pam Fletcher PF: I get that question all the time: why not something smaller? You don't really need that much. You use the electric to its ability, then you just need to limp. But we designed those cars to go anywhere, any time, and we don't want their performance to be compromised. If you're driving through the mountains, we don't want you to be crawling up grades, or to be limited on any terrain. So it's optimized to be able to travel literally the biggest grades and mountain roads around the globe at posted speeds. Because what if you can't? Another good reason: when the engine is on, you have to run it wide open throttle, max speed, most of the time. And while we can do a lot with acoustics, and the ELR has active noise cancelation, a small-displacement, low cylinder-count engine at high speed, high load all the time isn't something you want to live with. That's how we came up with the balance we did among the key factors of performance, NVH [noise, vibration and harshness] and range. ABG: Where you go from here? Is the range-extender engine due for an update? PF: We know and love the current Volt, and there is still a lot of acclaim about it, so we think it's a good recipe. But we are heavily in the midst of engineering the next-generation car, which I think everyone will love and be excited about.

2021 Cadillac Escalade's EPA highway fuel economy is worse than before

EPA fuel economy estimates for the 2021 Cadillac Escalade are out, and the news is mostly not good. The redesigned SUV sees slim to no improvement in the Feds' city ratings, and its highway numbers are considerably worse than before. These are estimates for the standard 6.2-liter V8. Figures for the no-cost-optional 3.0-liter turbodiesel six have not been released yet. Specifically, the rear-wheel-drive 2021 Escalade has estimates of 15 mpg city, 20 mpg highway, and 17 mpg combined. Compared to the outgoing 2020 version, powered by the same 6.2L V8, those numbers represent a 1 mpg improvement in city (the lone piece of good news) but are 3 mpg worse on the highway. With all-wheel drive, the 2021 Escalade can't even get out of the teens, with EPA ratings of 14 mpg city, 19 mpg highway, and 16 mpg combined. That's the same city rating as before and a 2 mpg decline versus the 2020 model's highway rating. For further comparison, cross-town rival Lincoln's Navigator with its 3.5-liter turbo V6 manages 16 mpg city and 22 mpg highway (RWD) and 16/21 with AWD. No one expects an ultra-large, body-on-frame, three-row SUV to achieve Prius-like levels of fuel efficiency, but it's pretty rare these days to see such backsliding with a fresh redesign. Here's hoping the diesel variant will have a happier story to tell. Related Video:

Cadillac teases two new V-Series prototypes at the Detroit Grand Prix

We told you earlier this week that there would be more to come from Cadillac's V-Series of performance vehicles following the introduction of the brand's CT4-V and CT5-V performance sedans. We just didn't expect it to come quite so soon. Cadillac surprised attendees of the 2019 Detroit Grand Prix as two new prototypes took to the track for what we figure must have been demonstration laps in between other official race events. A CT4-based machine wearing funky blue camouflage joined a red-hued CT5-based prototype on the track, with driving duties split between Mark Reuss, president of General Motors, and Ken Morris, vice president of Product. Cadillac CT4 V-Series prototype View 3 Photos Exactly what's powering these prototypes is still a mystery, but we have our suspicions that these two beasts are putting down a lot more power than the 320-horsepower CT4-V and 355-hp CT5-V that underwhelmed enthusiasts earlier this week. We wouldn't be surprised if there was a version of Cadillac's twin-turbo Blackwing V8 engine under the hood of this V-badged CT5 prototype. Cadillac is being coy with further details, saying only that these two vehicles "represent the next step in Cadillac's V-Series performance legacy." So we'll just have to wait for now. But in the meantime, feel free to peruse the images above and speculate in the comments below.