A Chevrolet Bolt EV electric vehicle is displayed at the North American International Auto Show in Detroit in this file photo. The Obama administration, which in 2008 set a goal of getting 1 million plug-in electric vehicles on the U.S. roads by 2015, has backed billions of dollars in electric vehicle subsidies for consumers and the industry. Yet with gas prices close to US$2 a gallon, only about 400,000 electric cars have been sold. SD-Agencies