German automakers BMW and Volkswagen have partnered with California startup ChargePoint to install nearly 100 public electric vehicle fast-charging stations along two of the busiest stretches of highway in the United States. The collaboration, dubbed the Express Charging Corridors Initiative, is aimed at meeting demand for fast-charging stations and to help encourage consumers to make the switch from gas to electric-powered cars. The effort also helps BMW and Volkswagen better compete with Tesla, the all-electric…