The Chevrolet Bolt EV electric concept car is unveiled during the first press preview day of the North American International Auto Show in Detroit

The Chevrolet Bolt EV electric concept car is unveiled during the first press preview day of the North American International Auto Show in Detroit

The Chevrolet Bolt EV electric concept car is unveiled during the first press preview day of the North American International Auto Show in Detroit, Michigan January 12, 2015. REUTERS/Rebecca Cook (UNITED STATES – Tags: TRANSPORT BUSINESS)