On an EV road trip to promote green tech, the US Energy Secretary and her entourage couldn't find enough electric vehicle chargers

On an EV road trip to promote green tech, the US Energy Secretary and her entourage couldn't find enough electric vehicle chargers

Energy Secretary Jennifer Granholm looks at electric vehicles during a visit to the Washington Auto Show in Washington.Andrew Harnik/AP <ul> <li>The US Secretary of Energy went on a road trip to pro… [+1891 chars]

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