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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.

2015 Cadillac Escalade gets 8-speed auto, range-topping Platinum Collection trim

The redesigned 2015 Cadillac Escalade is still quite fresh on the market, but the luxury brand has a host of mid-model-year updates for its massive luxury SUV that should make it an even better driver. The range-topping Platinum Collection (pictured above) is also all set to ensconce drivers in leather when it hits the road in the fourth quarter of 2014.
The entire Escalade range now gets an eight-speed automatic to replace the previous six-speed, and four-wheel drive models also get a two-speed transfer case to go along with it. New standard features include a Surround View camera system, 4G LTE connectivity, and the electric tailgate also now closes hands-free, in addition to opening that way.
To make riding in the Escalade an even more luxurious experience, Cadillac is adding a Platinum trim. Exterior changes add even more shine to the behemoth SUV with a grille wearing the redesigned brand crest, additional chrome trim, 22-inch wheels and Platinum badges. However, the interior is where things really get plush. The first and second row of seats are wrapped in Nappa, semi-aniline leather in a choice of either beige or gray. The dashboard, upper door panels and center console also get hand-stitched and wrapped leather, plus a suede microfiber headliner. Both front seats are heated and cooled with 18-way power adjustments, and the driver even gets a massaging function. Rear passengers are hardly left out, either, with 7-inch LCD screens in the headrests and a 9-inch screen in the center.

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.