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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.

eBay Find of the Day: Ryan Gosling Eldorado from Lost River

What's better than a car connected to Ryan Gosling? A car connected to Ryan Gosling and Matt Smith (the eleventh Doctor Who for our less nerdy readers). This 1966 Cadillac Eldorado convertible is driven by Smith in Lost River, Gosling's directorial debut. The movie was filmed in Detroit, with plenty of footage at the Packard factory, and the car is located in the nearby enclave of Hamtramck. Truth be told, this car has questionable star appeal and it needs a lot of work. Lost River currently holds a 20% fresh rating on Rotten Tomatoes. I've never seen an episode of any Doctor Who – a fact that amazes Seyth Miersma. And while I agree with Kroll Show character Wendell Shawn that Gosling is a "beautiful idiot," that's not enough for me to buy a car with an exhaust leak. The body on this Eldorado looks clean, but there is plenty of restoration work for the next owner. The listing states that most of the exterior and trim needs to be installed, and the front seats are in rough shape. Other details are vague – the carburetor "might need to be rebuilt" and the radiator and fan "may need to be replaced" but neither statements explain why. On the upside, the 340 horsepower (gross rating), 429 cubic inch V8 runs well. Reserve is not met at the current price of $4,000, but this could be a chance to get a classic '60's convertible for cheap. Featured Gallery eBay 1966 Cadilac Eldorado View 18 Photos News Source: eBay Celebrities TV/Movies Cadillac Auctions ebay Find of the Day celebrity ryan gosling

Cadillac Offering $100 For Test Drives

The video meant to be presented here is no longer available. Sorry for the inconvenience. Cadillac is hoping to jumpstart sluggish sales with a generous offer to customers to get them into dealerships and perhaps behind the wheel of their very own Caddy. Cadillac is giving a $100 gift card to any insured car owners age 21 or older who drive non-GM vehicles built after 2004, WDIV reported. If you buy a Cadillac, the automaker is offering an additional $1,500 plus other incentives. Such sales promotions have worked well in the past, analysts told The Detroit News. Cadillac had strong sales last year, but sales are down 7.3 percent this quarter compared to the first quarter last year. Cadillac will run the promotion until the end of the month. Related Gallery AOL Autos Test Drive: 2014 Cadillac ELR Cadillac Car Buying Car Dealers