General Motors CEO Mary Barra is sworn in before the House Energy and Commerce Committee for a hearing on the GM ignition switch recall on Capitol Hill in Washington, DC, April 1, 2014.  Relatives of car crash victims and lawmakers demanded accountability from embattled US automaker GM Tuesday as its CEO faced Congress, amid claims that a $2 fix could have saved lives. AFP PHOTO / Jim WATSON        (Photo credit should read JIM WATSON/AFP via Getty Images)