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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.

Cadillac mulling CTS Coupe successor after all

The 2014 Cadillac CTS made a big splash last week at the New York Auto Show, but now that we've seen the sedan, we can start to wonder about whether coupe and wagon versions are in the cards. According to Edmunds, Cadillac is at least considering bringing back the CTS Coupe for a second generation, which seems like an even better chance since the brand's global marketing director, Jim Vurpillat, was quoted as saying that the car was the top-selling luxury coupe in the industry.
Of course, this goes against reports we heard last year that Caddy's coupe and wagon would live on just not under the CTS name, but the interview with Vurpillat has us hopeful for a next-generation CTS Coupe. If it does come to fruition, we would expect the new two-door to have a largely unique exterior design like the current CTS Coupe, to echo that of intended rivals like the Mercedes-Benz E-Class Coupe and even the high-dollar BMW 6 Series.

2017 Cadillac XT5 will debut in Dubai

Cadillac confirmed the 2017 XT5 crossover – the replacement for the SRX – will officially debut at the Dubai Motor Show in November. The XT5 will then make its first North American appearance at the Los Angeles Auto Show later that month. The current SRX is a hugely important vehicle for Cadillac – it's still the company's best-selling product worldwide. But it's pretty old now, having launched in 2009 as a 2010 model. The XT5 will bolster all of the good things about the SRX while finally bringing that product up to date. Above, you can see a spy shot of what looks to be the new XT5, caught during a photo shoot. "The XT5 will be the cornerstone of a series of crossovers bearing the 'XT' designation," Cadillac said in a statement. We've long known that Cadillac wants to add a CUV between the XT5 and its flagship Escalade. But we think there's also room for something smaller – a proper fighter to the expanding entry-level luxury crossover segment that includes the Mercedes-Benz GLA, BMW X1, upcoming Infiniti QX30, and more. We'll have more information on the 2017 XT5 this week. In addition to the auto show news, Cadillac confirmed it will have a few photos and details to share in the coming days. Stay tuned.