Morris and Salom Electrobats are seen in front of the Old Metropolitan Opera House on 39th Street in the Manhattan borough of New York, 1898. Museum of Modern Art/AP hide caption

itoggle caption Museum of Modern Art/AP

A Nissan Leaf charges at a station in Portland, Ore., that can recharge an electric car in 30 minutes. Electric cars could be an integral part of meeting 55-mpg fuel standards by 2025, but many consumers are put off by the vehicles' higher price and what some call "range anxiety." Rick Bowmer/AP hide caption

itoggle caption Rick Bowmer/AP