A Chevrolet Volt plug-in hybrid vehicle is being charged at Stewart Chevrolet in Colma, California, U.S., October 3, 2017. REUTERS/Stephen Lam/File Photo
Automobiles for sale are seen at car dealerships in Colma,
A Chevrolet Volt plug-in hybrid vehicle is being charged at Stewart Chevrolet in Colma, California, U.S., October 3, 2017. REUTERS/Stephen Lam/File Photo