Lawyers for General Motors Co. customers are jostling to lead lawsuits over faulty ignition switches, Bloomberg News reported yesterday. Car owners suing over the lost value of recalled vehicles have yet to learn whether they can claim $10 billion, a few hundred thousand dollars, or nothing. That number will be decided later this year by Bankruptcy Judge Robert Gerber, who presided over GM’s bailout in 2009. Meanwhile about 100 delayed cases are in the hands of U.S. District Judge Jesse Furman in Manhattan. He told the customers yesterday at his first court conference that he will advance their suits as fast as possible, and encourage settlements, while at the same time try not to get in Judge Gerber’s way.