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WASHINGTON, DC - Jan. 22: John Pinson, right, of General Motors, explains alternative vehicles to Assistant Energy Secretary Alexander "Andy" Karsner during media day at the Washington Auto Show. (Photo by Scott J. Ferrell/Congressional Quarterly)

WASHINGTON, DC - Jan. 22: John Pinson, right, of General Motors, explains alternative vehicles to Assistant Energy Secretary Alexander "Andy" Karsner during media day at the Washington Auto Show. (Photo by Scott J. Ferrell/Congressional Quarterly)

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