BMW Active E Driver Todd Crook, Nissan Leaf Diver Mea Campbell and Chevy Volt Driver Gary Gero attend a California Electric Transportation Coalition VIP Tour at the Los Angeles Auto Show on Monday Dec 3, 2012, in Los Angeles. (Photo by Todd Williamson/Invision for Better World Group/AP Images)

Associated Press
BMW Active E Driver Todd Crook, Nissan Leaf Diver Mea Campbell and Chevy Volt Driver Gary Gero attend a California Electric Transportation Coalition VIP Tour at the Los Angeles Auto Show on Monday Dec 3, 2012, in Los Angeles. (Photo by Todd Williamson/Invision for Better World Group/AP Images)
BMW Active E Driver Todd Crook, Nissan Leaf Diver Mea Campbell and Chevy Volt Driver Gary Gero attend a California Electric Transportation Coalition VIP Tour at the Los Angeles Auto Show on Monday Dec 3, 2012, in Los Angeles. (Photo by Todd Williamson/Invision for Better World Group/AP Images)
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