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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.

2014 Cadillac CTS starts $7k higher than last model at $46,025*

The redesigned 2014 Cadillac CTS will be more powerful, stylish and luxurious than its predecessor, but it will also be much more expensive. With a new starting price of $46,025 (*including $925 for destination), the 2014 CTS represents a price increase of more than $7,000 compared to the 2013 model, but it should be more appropriately sized and equipped to take on rivals like the BMW 5 Series and Mercedes-Benz E-Class, which start at $47,800 and $51,900, respectively.
Available trim levels - referred to as Collections - include Luxury, Performance and Premium, offering either a 2.0-liter turbocharged inline four-cylinder or a 3.6-liter V6 and the choice of either rear- or all-wheel-drive configurations. For more performance, the all-new CTS Vsport model will have an asking price of $59,995. This 420-horsepower model is more powerful than both the BMW 550i and Mercedes E550 and about $2,000 less expensive than both.
There's still no word on what Cadillac has in store for a next-gen CTS-V sedan, but we're guessing power and price will both rise considerably. Scroll down for more info on the 2014 CTS that is set to go on sale this fall.