As the sun was setting on a stormy Georgia day, Brooke Melton was 30 miles outside of Atlanta in her Chevy Cobalt. It was March 10, 2010, her birthday, and the 29-year-old pediatric nurse was on her way to her boyfriend’s to celebrate.
Melton had purchased the white GM Cobalt in 2005, the year the four-cylinder compact first rolled out of factories, and lately it had been giving her trouble. A week earlier the engine had unexpectedly shut off. Melton managed to pull over to the side of the road and restart it, but the incident shook her. She phoned her father, who advised her to bring the car in to the local dealership. So she wouldn’t forget, Melton scribbled a list of the problems in a notebook: “Key locking in the ignition,” she wrote. “Suddenly shutting off while driving and unable to turn vehicle.” Under “strange knocking sound” she underlined “ignition problems.” Mechanics at the dealership assured her nothing was wrong, and after cleaning the fuel injection gave Melton back her car a few days later with a clean bill of health.