Electric cars have a road trip problem, even for the secretary of energy

A road trip I took with Energy Secretary Jennifer Granholm confirmed one thing: The U.S. is wrestling with an inadequate charging network (unless you’re a Tesla driver).

(Image credit: Drew Angerer/Getty Images)

​A road trip I took with Energy Secretary Jennifer Granholm confirmed one thing: The U.S. is wrestling with an inadequate charging network (unless you’re a Tesla driver).