Last week, as the national media and the U.S. Congress credited Lance Cooper’s discovery with exposing a corporate cover-up and federal regulatory lapse and pushing General Motors to recall 1.5 million cars with a potentially deadly ignition defect, Cooper was in his Marietta office doing what he usually does: preparing for a trial, initiating a new lawsuit and investigating other potential cases.

“It was a long, hard journey getting at the truth,” Cooper said in an interview after the congressional hearings. “It’s frankly a shocking story when you look back at how much GM knew and when they knew it.”