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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.

2018 Cadillac XTS V-Sport Drivers' Notes Review | Cruise missile

The XTS is a standout in Cadillac's current lineup. It's a throwback to the automaker's cars of the '90s and early 2000s. It's big, comfy and packs a punch under the hood, but there's only a slight pretense of sportiness, despite the V-Sport moniker. If you want a Cadillac that handles, buy a CTS or ATS. Still, there's nothing wrong with being a big, slightly soft cruiser. Not everyone is out to conquer the Nurburgring. Some people just want comfy seats and a half-mile of wheelbase. Our tester is the range-topping Platinum V-Sport trim. At $73,040, it's not exactly cheap. That said, you do get a hell of a lot for your money. This car has heated and cooled massaging front seats with 22-way power adjustment, a heated steering wheel, heads-up display, the latest version of Cadillac's infotainment system, Bose surround sound, LED headlights and adaptive cruise control. That's not including all the V-Sport goodies like Brembo brakes, magnetic ride and a howling 3.6-liter twin-turbo V6. Senior Editor, Green, John Beltz Snyder — Hopping in the Cadillac XTS, the familiar surroundings created a certain set of expectations. Like judging a book by its cover, it's an easy trap to judge a Cadillac by its interior (they all feel the same to me). Some of what I expected, I got: a smooth ride, hearty pep, robust driver assist and fussy audio and HVAC controls. What surprised me was just how urgent this motor is. On paper, that should come as no surprise. The V-Sport's 3.6-liter twin-turbo V6, making 410 horsepower and 369 pound-feet of torque, is bound to pack a punch. You almost forget what that should feel like, though, until you put your right foot down. There's no lag, and despite the all-wheel drive, there's even a little torque steer. The lightness of the steering means it's no difficult task to account for it, though. Speaking of steering, I actually enjoyed bending this through tight corners. It's a breeze to saw the tiller back and forth, and the car communicates the interaction between the tires — especially up front — with the road. I'd like to take this Caddy to the track. Associate Editor Reese Counts: I liked this car way more than I thought I would. I was expecting a DTS or STS with a fresh face and a bit more punch. In a way, that's what this is, but I don't mean that as a knock. I don't need every car I drive to be able to put down hot laps. Sometimes I want something with soft seats (that massage!) and a big engine to get me home quickly.

GM extends production cuts, affects Cadillacs, Camaro and Acadia

General Motors is extending production cuts at some of its North America factories due to a chip shortage that has roiled the global automotive industry, the U.S. carmaker said on Thursday. The move's impact has been baked into GM's prior forecast that the shortage could shave up to $2 billion off this year's profit. GM's Lansing Grand River assembly in Michigan will extend its downtime through the week of April 26. The plant makes Chevrolet Camaros and Cadillac CT4 and CT5 sedans. It has been out of action since March 15. GM's Spring Hill assembly in Tennessee will shut down for two weeks starting the week of April 12. The plant makes the Cadillac XT5, XT6 and GMC Acadia. The company said it has not taken downtime or reduced shifts at any of its more profitable full-size truck or full-size SUV plants due to the shortage. The news was first reported by CNBC. Reporting by Ankit Ajmera in Bengaluru; Editing by Maju Samuel and Sriraj Kalluvila