Two potential customers walk past a Chevrolet Volt electric vehicle and a gas-powered Chevrolet Cruze on display at the Suburban Chevrolet dealership in Ann Arbor, Michigan, October 22, 2011. ... more 
Two potential customers walk past a Chevrolet Volt electric vehicle and a gas-powered Chevrolet Cruze on display at the Suburban Chevrolet dealership in Ann Arbor, Michigan, October 22, 2011. REUTERS/Rebecca Cook less 
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Reuters | Photo By � Rebecca Cook / Reuters / Reuters
Tue, Apr 8, 2014 5:12 PM EDT