By Associated Press It was revealed today that the piece needed to fix a defective ignition switch linked to 13 traffic deaths would have cost just 57 cents, according to documents submitted by General Motors to lawmakers investigating why the company took 10 years to recall cars with the flaw. CEO Mary Barra has testified in a congressional hearing today saying that she was disturbed by past GM comments that the cost of replacing defective switches in some cars was too high. 'I am deeply sorry,' Barra said at the beginning of the hearing. At a hearing Tuesday, members of a House subcommittee demanded answers from Barra about why the automaker used the switch in small cars such as the Chevrolet Cobalt and Saturn Ion even though it knew the part didn't meet GM's own specifications.
@highlight
Mary Barra told Congress today that she was disturbed by earlier statements from other GM execs who said it would be too costly to switch the faulty parts
@highlight
Starter ignition switch that jiggled out of place prompted the recall of 2.6million cars
@highlight
Over the past 10 years, 13 people have died in at least a dozen accidents that were later connected to the switch
2003: A service technician reports that a @placeholder stalled while driving, and that the weight of the owners' keys had worn down the ignition switch.