<p>President Barack Obama speaks during his visit to the General Motors Auto Plant in Hamtramck, Mich., Friday, July 30, 2010, where the 2011 Chevy Volt, an electric car, is assembled.</p>
August 1, 2010
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August 1, 2010 9 p.m.
Electrifying future
GM offers Volt, Nissan counters with the Leaf
The automobile is about to charge into the future.