General Motors Corp. formed its Saturn subsidiary in 1985 as a “different kind of car company” that would revolutionize the way small cars were built and sold in the U.S. It operated somewhat independently of GM, building cars at its own assembly plant in Spring Hill, Tenn., and selling them through a separate dealer network. It was known for haggle-free pricing and customer-friendly service. GM tried to sell Saturn to the Penske Automotive Group in 2009, but the deal collapsed and GM halted production. In 2010, it shut down Saturn and its franchises completely.