G.M. Chief, in China, Challenges Planned Bans of Gasoline Cars As the country joins others taking aim at combustion engines, Mary Barra of G.M. said customers, not government rules, should choose car technologies. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Cambodia Frees Australian Filmmaker Convicted of SpyingTran Dai Quang, Hard-Line Vietnamese President, Dies at 61The Saturday Profile: A ‘Hillbilly’ From Arkansas, Doing Life in QatarWhy European Leaders Ambushed Theresa May in SalzburgBrazil Fires Diplomat Accused of Assaulting WomenTanzania Ferry Capsizes, Killing More Than 80