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Winner: Buick
 Winner: Buick
Who said Baby Boomers would never accept their parents' doctor's brand? Inspired new designs -- LaCrosse, Regal -- combined with the halo effect of success in China -- have supercharged results. GM marketing boss Joel Ewanick's move to market Buick as a luxury brand looks brilliant.

NEXT: Winner: Ram
Last updated April 11 2011: 9:23 AM ET
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