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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.

Tesla leads and Infiniti bleeds in Consumer Reports' satisfaction survey

According to Consumer Reports, Tesla owners are more likely to rave about their vehicles than any other brand. And we're not surprised — Tesla has performed very well in past customer satisfaction surveys, despite the fact that the electric cars themselves tend to have more problems than most other automobiles. Second place went to Lincoln, which interestingly had a higher cumulative score than Tesla in individual category measurements like comfort and storage space. Ram, a truck-only brand, rounded out the top three. The consumer-focused magazine bases its owner satisfaction score on responses to a very simple question: Would you buy this exact car again? The higher percentage of owners who answer "definitely yes" to that question, the higher the satisfaction score. Further breakdowns are scored for other parts of the ownership experience, which is why brands that rank poorly in Consumer Reports' own reliability charts — like Tesla and Lincoln, for example — can still earn top marks for satisfaction. The lowest-ranked brands for satisfaction are Cadillac, Nissan and Infiniti. Interestingly, Cadillac performed better than average in Driving and Comfort and middle-of-the-road in the In-Car Electronics and Cabin Storage, but like most other brands, scored poorly in Value. In fact, only Subaru, Mazda and Volkswagen scored better than average in Value. Nissan and especially Infiniti earned comparatively low marks across the board to go along with the bottom-of-the-barrel satisfaction score. Here's the full list of automakers from Consumer Reports' satisfaction survey, ranked in order from best to worst: Tesla Lincoln Ram Chrysler Subaru Hyundai Porsche Dodge Mazda Toyota Kia Mini BMW Ford Audi Honda Volvo Volkswagen Lexus Jeep GMC Chevrolet Mercedes-Benz Buick Cadillac Nissan Infiniti It's worth diving into the individual category scores in addition to the official finishing order for a full look at the results. For instance, despite the fact that automakers like Lincoln and Ford use similar infotainment systems, their In-Car Electronics scores don't quite match up. Also, some automakers have full lineups with multiple cars, trucks and SUVs while others offer just a couple of nameplates. Head on over to Consumer Reports for all the details. Looking for a reliable car, truck or SUV? Check out the top 10 vehicles that owners keep the longest.

Why does this Cadillac fob seem to be for a mid-engine roadster?

Is GM bringing back its Caddied-up Corvette sibling, the Cadillac XLR — only this time based on the mid-engine Corvette? That's the question posed by photos of a wedge-shaped Cadillac key fob someone provided to The Drive. The buttons show a trunk — and also a frunk. So, mid-engine, unless the fob goes with an EV that has its motors and other electrical bits scattered to the wheels and elsewhere. Also, there's a button to operate a droptop. And the car profile on the fob is Corvette-like. All of which makes for some pretty great speculation. Except that Cadillac's way back from the failures of its sedan-centric lineup was thought to be through SUVs such as the new XT4 compact crossover, the XT5 and the somewhere-in-testing three-row XT6. Plus, the XLR, which was produced between 2003 and 2009, hit its sales peak in 2005 of just 3,730 cars, or about one-tenth the sales volume of the Corvette. So it's hard to imagine there's a vast untapped market out there for the luxury roadster — plus the XLR's demographic of well-to-do grandpas is dying off, or at least thinks it is. So a resurrected XLR would seem to be an unlikely savior. A lot's happening with GM's luxury brand — the debut of the XT4 at long last, a new boss, a thinning of the sedan herd but expansion of the V's, a backtrack to Detroit after its New York sojourn, the cash-cow Escalade under direct assault from the fine new Lincoln Navigator, and the impressive performance of its Super Cruise technology. But an XLR? So what is this fob's story? The Drive speculates it's a universal test fob and the buttons don't necessarily mean a thing, or that somebody stuck a Caddy emblem on it just to yank our chains. Who's to say. What would you like it to mean? Related Video: