Although sales of electric and hybrid vehicles have struggled, automakers are charging ahead to bring new battery-powered vehicles to market. Several car companies have focused on electric vehicles at the International CES consumer trade show here, including General Motors , which on Wednesday introduced the production version of its Chevrolet Bolt. G.M.’s chief executive, Mary T. Barra, said the Bolt was a big step forward in the electrification of vehicles because of its price and ability to travel 200 miles on a fully charged battery. “This is truly the first EV that cracks the code because of long range at an affordable price,” Ms. Barra said in a keynote speech at the show. The Bolt, which will […]