Tom Stephens, vice chairman of global product operations at General Motors Co., shows off the North American Car of the Year award won by the 2011 Chevrolet Volt electric car during the Detroit auto show. (Bloomberg)
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Tom Stephens, vice chairman of global product operations at General Motors Co., shows off the North American Car of the Year award won by the 2011 Chevrolet Volt electric car during the Detroit auto show. (Bloomberg)
