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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.

Liberace's gilded Cadillac could be yours

With their chrome grilles and oversized wheels, it's hard not to notice a Cadillac these days. But this one is even more blingtastic on account of the 23.75-karat gold-leaf bodywork.
The 1931 Cadillac Golfer's Drop Head Coupé is said to have belonged to the inimitable performer Liberace, who didn't just have it covered in gold - he also had the exterior door handles plated in silver and the inside handles in 24-karat gold as well. It's also got a white leather interior and headlights that - well ahead of their time (if you'll pardon us, Mr. Tucker) - pivot with the steering wheel. All that bling is powered by a 5.7-liter V8 mated to a three-speed automatic transmission that pales in comparison to the seven, eight and even nine-speed gearboxes appearing on luxury sedans today.
The project was undertaken over the course of three years in the 1970s by one Jack Smith from Kansas. Smith (if that was his real name) sold it at auction in 1975, and it was most recently displayed for 12 years at a museum in Germany which claimed it was Liberace's own. The car is now going up for sale by Barons' at the Sandown Park horse racing track in Surrey, England, on September 17, when bidding starts at 85,000 pounds - equivalent to over $130,000 at today's rates.

11 vehicles from Barrett-Jackson Las Vegas worth watching

This weekend will see the world's collector car crowds descend on Las Vegas, NV for one of the biggest shows on Barrett-Jackson's popular auction circuit. There are hundreds of vehicles up for bidding, ranging from a brand-new Lamborghini Aventador to a spattering of Art Deco classics and a huge swath of classic muscle cars.
While it's virtually impossible to assemble an inarguable list of the best cars coming during the three-day, 700-plus vehicle auction, we've sifted through the listings for this year's show - it was a tough assignment, we promise - and assembled a list of what we think will be some of the most interesting lots. We'll admit, it's a bit heavy on American iron, but if you browse BJ's listings, you'll come to a similar conclusion. Still, scroll down for our list of what we think will be the most interesting vehicles at the upcoming auction.