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BMW Active Hybrid 3

DETROIT, MI - JANUARY 09: BMW introduces the new Active Hybrid 3 during the press preview at the North American International Auto Show at the COBO Center on January 9, 2012 in Detroit, Michigan. The show is open to the general public January 14-22. (Photo by Scott Olson/Getty Images)

Scenes from the Detroit Auto Show

The 2012 North American International Auto Show began Monday in Detroit. Here's a look at the cars and showcases.