incompetence and neglect. they were failed which a corporate concealing and failed to act. reporter: at least 13 people died as a result of the faulty ignition switch but says that number could rise. on wednesday the new york times cited internal gm documents to regulators it obtained. also on wednesday this ad taken out by gm to remind drivers how to safely drive their recalled car until they re fixed. this is a tragic problem that should never have happened and must never happen again. this time lawmakers are grilling more than just barra. michael milliken, gm s lead lawyer, is testifying, as well as the ceo of delphi, the switch manufacturer. so is anton valukas, the former