General Motors CEO Mary Barra (R) testifies before the House Energy and Commerce Committee hearing on Capitol Hill in Washington April 1, 2014. The hearing pertains to GM's recall of defective ingnition switches and the company's failure to recall certain vehicles whose air bags would not deploy in crash situations. 13 people have died over the last ten years in GM vehicles with the ignition switch defect. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS TRANSPORT BUSINESS)