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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.

GM's Cruise Origin EV platform to be shared by many electric vehicles

GM on Monday announced that it was spending $2.2 billion at its Detroit-Hamtramck facility, part of its $3 billion commitment made after the UAW strike to transform Hamtramck into the company's first plant to exclusively build a wide variety of electric and autonomous vehicles. The operation will eventually employ 2,225 people. Hamtramck is still building the Cadillac CT6 and Chevy Impala. Production of those cars will wind down Feb. 28, when GM will idle the lines for 18 months of retooling. During the transition, more than 800 workers will likely be transferred to build pickups at Fort Wayne, Indiana, or Flint, Michigan. When Hamtramck production of new EVs begins in late 2021, the Cruise Origin electric shuttle revealed last week will be among the first vehicles built there. Also, an electric pickup likely branded as a Hummer to be sold as a GMC, which will be debuted by LeBron James during the Super Bowl this Sunday. GM made quite a few pronouncements during the unveiling of the electric, autonomous Cruise Origin last week in San Francisco. We heard that the Origin was designed to last for for 1 million miles, be "roughly half the cost of what a conventional electric SUV costs today,” and riders could save as much as $5,000 per year by giving up their cars for Origins. Much was left out, as well, such as detailed specs on the platform, and when the Origin could see wide deployment. Carscoops addressed one open question about the platform, reporting that the Origin's bones will be shared among a number of other GM battery-electric vehicles, probably starting with the Cadillac EV due in 2021. The site received confirmation of that tidbit from Megan Soule, the automaker's assistant manager of Electrification, Battery Technology, Fuel Cells, R&D and GM Ventures Communications. It seems what we've been shown in the Origin is the first fruit of the multi-vehicle EV strategy GM CEO Marry Barra presented at the 2017 Barclays Global Automotive Conference. One of the slides (below, full PDF presentation here) touts an "All new multi-brand, multi-segment platform" with a "Structurally integrated all new battery system." The next slide places that modular platform at the center of 11 new vehicles, the van-looking silhouette on the upper right labeled "SAV," for shared autonomous vehicle, apparently in reference to the Origin.

Book by Cadillac subscription service returns next year

Cadillac rolled out its subscription service Book by Cadillac at the beginning of 2017. On December 1, 2018, the automaker put the service on hiatus after having made a few revisions and learned a lot of lessons. Just a month later, brand president Steve Carlisle told GM Authority at this year's Detroit Auto Show that Book was definitely returning. A week after that, GM chief financial officer Deborah Wahl said Book 2.0 could be ready as soon as Q2 this year. It's taken a touch longer than expected to sort out the kinks, but Automotive News reports Wahl told an audience at the J.D. Power/NADA AutoConference L.A. that the real return happens in the first quarter of 2020.  When Book went on hiatus last year, the service charged $1,800 per month for insurance, maintenance, unlimited miles, the ability to swap into any Cadillac at will, and concierge-like vehicle delivery to your location with amenities like bottled water, umbrellas, and detailing. Good things came of it for the brand, such as the 70% of subscribers who'd never owned a Cadillac. Yet the drawbacks were too much. At one point, the carmaker said Book's halt was due to technical issues like "snags with the back-end technology used to support the service" that hampered customer service and increased costs. Cadillac managed the Book's fleet, as opposed to the dealers, and consumer choice — or a lack of it — played a role in the hiatus. In Carlisle's comments to GMA, he said that subscribers didn't swap out vehicles nearly as much as expected. Even though everything up to the full-fat V-Series models was in the catalogue, Carlisle said of the customers, "They wanted an XT5." The devotion to that one product changed the economics. "Are [subscribers] going to stay in that service if thatÂ’s what they realize they want?" he asked. "It is inherent in that model that we maintain more than one car per customer. And you got to think through the economic implications of that. Particularly if utilization is a lot lower than we thought because people are switching less than we thought." Wahl didn't offer any specifics on how Book 2.0 will differ from Book 1.0, only saying that there will be more "convenience, flexibility and value for potential subscribers." There will be less focus on swapping cars, and Cadillac will "base it off the dealer network." Since the brand's 900 U.S. dealers have the inventory, anyway, that should help both parties.