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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 confident attitude will attract the elite to ELR plug-in hybrid [w/video]

Cadillac is not going to pull any punches when it comes to promoting its plug-in hybrid ELR. In the real world, the company is showing off the Wreath And Crest's coupe with Chevy Volt technology at exclusive events with "groups whose members are affluent, green-minded and have an appreciation for design and innovation," says Automotive News. That evidently means young Hollywood celebrities and other well-to-do demographics. As Cadillac global chief Bob Ferguson recently told the industry publication, "If you live on the West Coast and you're an architect and you've given to environmental causes, you're probably going to hear about the ELR. We have sliced and diced who is likely to buy this vehicle." "We have sliced and diced who is likely to buy this vehicle" - Cadillac's Bob Ferguson In the realm of advertising, Cadillac evidently thinks a fast-talking, USA-USA-USA! Type-A personality is just the kind of guy who will convince those celebrities and architects to buy one. For proof, look no further than the star of this new ELR ad called Poolside that Cadillac is airing during the Olympics. There are almost no details about the ELR in this ad, just a whole lot of attitude mixed with humor (the "We got bored" line is funny). In fact, there's almost no indication that the ELR is an extended-range hybrid at all. Short of a brief moment where our hero, actor Neil McDonough, unplugs his car from its charging station, you'd probably never know it's got an EV mode at all. That's undoubtedly a calculated bet by Cadillac, whose ad execs have undoubtedly noted that most electric cars are not selling well with an eco-first message, so they appear to be going with style and swagger instead. Scroll below to see what we mean. The ELR has a starting MSRP of $75,000, and at that price, it's already out of reach for most Americans. Automotive News suggests that annual ELR production is likely to be just shy of 5,000 units, so Cadillac could be on stable ground trying to appeal to such a limited number of buyers. What type of buyers? Well, that remains to be seen. Related Gallery 2015 Cadillac ELR: First Drive View 25 Photos News Source: Cadillac, Automotive News - sub. req. via YouTubeImage Credit: Gallery images copyright 2014 Michael Harley / AOL Green Cadillac Electric Hybrid PHEV cadillac elr elr poolside

2018 Cadillac XT7 three-row crossover spied [UPDATE]

UPDATE: Upon further consideration, and after speaking to some industry insiders, it appears this might not actually be a new Cadillac, but instead just a mule of the new Chevy Traverse. One source points out that the foglights are fixed, round units, which would be production spec and would not suggest Cadillac. Another source says the Cadillac version of the Traverse/Acadia/Enclave was cancelled, and development has stopped. Yes, a Cadillac of this size is expected to arrive – and elements of this prototype sure do look Cadillac to us – but it might be too early for this to be it. Cadillac is expanding its portfolio with a three-row crossover. This is it. Expected to be called the XT7, the new vehicle will give Cadillac an entry above the XT5 and below the hulking Escalade. Though the XT7 is heavily covered, we can see Cadillac's (?) bold grille and what looks like strong proportions. It'll probably look like a larger XT5, and you can sort of (maybe) see a similar roofline if you squint. Spy shooters caught it testing with the new Chevy Traverse and Buick Enclave, and they're all expected to use the new General Motors 3.6-liter V6 engine, like the recently revealed GMC Acadia. The XT7 could show up as soon as late this year or early in 2017. Its part of GM's push to capitalize on the red-hot crossover segment that has been fueled by low gas prices and Americans' thirst for utility. The XT7 would likely represent GM's most profitable play in this segment. Simply affixing the Cadillac badge on the front adds thousands of dollars to the sticker compared to a Chevy or Buick product. The XT7 will also give Cadillac a significant opportunity for growth – and perhaps allow it to gain on Mercedes and BMW on the sales charts. While the CTS and ATS have had mixed success, Americans have continued to show a willingness to buy Cadillac utility vehicles. The XT7 is the latest in Cadillac's product blitz following the XT5 and the CT6 range-topping sedan. Those two are the most critical Caddys, but the XT7 isn't far off. Related Video: Featured Gallery 2018 Cadillac XT7 View 11 Photos Image Credit: Brian Williams / SpiedBilde Spy Photos Cadillac SUV