DETROIT—For the past several years, the federal government has spent hundreds of millions of dollars promoting the development of electric cars. Now regulators are investigating whether the big battery packs used by one of them pose a safety risk in the event of an accident.
Last week, U.S. auto-safety officials opened an investigation into General Motors Co.’s Chevrolet Volt after two crash tests of the electric car caused its battery to spark or catch fire.
Full Story: GM’s Volt Woes Cast Shadow on E-Cars