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Cadillac Celestiq, Lyriq, Hummer, other future GM electric cars: Here's everything we saw at ‘EV Day’

WARREN, Mich. — Today, General Motors held an “EV Day” event at its Warren, Michigan, campus to present its new “Ultium” battery technology, modular electric vehicle architecture and soon-to-come electric vehicles. Unfortunately, we were forbidden from bringing cameras into the event, so while we canÂ’t show you what we saw, we can tell you more about it. While we saw the previously teased Cadillac EV (which we now know to be called the Lyriq) and the GMC Hummer pickup teased during the Super Bowl, there were a number of other future cars at the event, which GM President Mark Reuss assured us are all real vehicles in the works. The biggest surprise came at the end of the event, though, in the Cadillac Celestiq electric sedan, which Reuss described as a future flagship that would be hand-built “very locally.” It had been hiding under a dark sheet all morning, with the front and rear illuminated Cadillac emblems shining from underneath. When the wraps came off, we saw a long, white, four-seat fastback sedan. The 23-inch wheels were pushed out to the very corners of the car, giving it what appeared to be a very long wheelbase. The model on the stage had no side mirrors or visible door handles. The grille mirrored that of the Lyriq crossover next to it, with integrated lighting in lieu of the usual mesh or slats youÂ’d see in an internal combustion car. The entire roof, all the way until it tapered to the tail of the vehicle, was tinted glass. In back, vertical tail lighting ran down the C-pillar before turning rearward across the top of the trunk. Inside, everything below the beltline of the windows — essentially all but the headrests and top portion of the steering wheel, was hidden from view. Behind the Celestiq, a large digital display showed a rendering of its interior. The dash consists of a pillar-to-pillar curved LED display serving as both instrument panel and infotainment system. Protruding forward between the front seats was another touchscreen that appeared to house some more controls, with open area, probably for storage, below it. The rear seats had the same sort of touchscreen between them. Built into the back of the front seats were a pair of rear-seat entertainment screens, much like we saw in the Lyriq. The door panels blended wood, metal and animated lighting to give character and a sense of opulence. GM interior design manager Tristan Murphy was on hand to tell us a bit more about the Celestiq.

Mystery Cadillac coupe concept revealed in patent drawings

We have been reminded once again that when Cadillac designs a coupe, it's usually spectacular. The reminder comes in the form of a patent drawing filing that was previously reported on by Jalopnik. In the filing are shots of the two-door from just about every angle, and there's not a bad one in the bunch. Unfortunately, there isn't really any other information about the car in the patent, so the car remains a mystery in that regard. Still, there's a fair amount to be gleaned from the images. It certainly looks sportier than most recent Cadillac concepts. It has a fastback roof and a short deck lid. The rear bumper has a diffuser design fitted to it. The rear fenders are very wide. It has large auxiliary grilles on each side of the center one, and the way the taillights are designed seem to hint at extractor vents. The overall proportions even look a bit like those of the Camaro, but possibly a little larger. The car also looks like it's probably a concept. The side mirror stalks are far too skinny to actually be production units. The big diffuser and center exhaust, plus those rear extractor vent designs seem a little much for a production model, too. The headlights are also a little on the small side. Being a concept (probably), we're a little worried. We really want to see this thing come to market, but Cadillac has a bad track record of showing beautiful concepts that never make it to production, even when they aren't particularly over-the-top. The Elmiraj and Ciel are two that come to mind. The former was a coupe, too, and was elegant and grounded. We never got a production version of either. We did see some styling inspiration from the Elmiraj on the ATS and CTS, but they never quite captured the concept's beauty. Then again, when Cadillac has managed to bring a recent concept to production, the results haven't great. The Converj concept became the ELR, and while the styling came through fine, it was hampered by an uninspiring powertrain and an excruciating price tag. But hey, Cadillac could always prove us wrong. And we would like them to. Related Video: Featured Gallery Cadillac Coupe Patent Drawings News Source: U.S. Patent and Trademark OfficeImage Credit: U.S. Patent and Trademark Office Cadillac Coupe Concept Cars Luxury

How GM's grueling 24-hour test gets the kinks out of its performance cars

One of the biggest challenges automakers face when designing a high-performance car is making sure that it is both fast and reliable. For General Motors, any car that might be taken to the track by its owner - like the Corvette, Camaro Z/28 (shown above) and the Cadillac CTS-V, for example - undergoes a rigorous and strenuous 24-hour test by engineers at the Milford Proving Grounds, as pointed out by Car and Driver.
We've posted on this topic in the past - on a video showing the Camaro ZL1 being brutalized, for instance - but this article gives a more in-depth look at what actually happens behind the scenes... including what that poor ZL1 went through. Though the test isn't for 24 hours straight, the cars are pushed as hard as possible by some of GM's best drivers with only the brakes and tires replaced frequently.
We don't want to ruin the fun for you, but it is an interesting article that tells just some of what GM does to develop its sports cars. Check out the full article over at Car and Driver for the rest of the story.