Stealing cars and selling them used, or stripping them to sell their parts, may be an illegal business, but it is a business. And as a business, it operates on the same laws of supply and demand as any other operation. The most popular cars on the road are usually the ones that end up being stolen the most [source: U.S. Senate]. So it's not just a coincidence that the Chevrolet Silverado pickup, which was the second best-selling automobile of 2010, is also the second most stolen [source: Chicago Tribune]. Out of every 1,000 Silverados on the road, eight were reported stolen [source: Highway Loss Data Institute]. That means with more than 370,000 of the pickups sold in 2010, almost 3,000 of them would have been reported stolen [source: Chicago Tribune].