Right, but I'm driving the car and responsible for maintenance. I can mitigate some of the risk, and have insight into the level of risk.

When I get in a plane, I want absolute confidence in the competence of the pilot and crew. I want to know that the plane has been inspected and certified, and the maintenance logged and triple checked.

Finding out that my confidence was misplaced, that the manufacturer has been cutting corners related to safety and structural integrity, that's a deal breaker for me. An auto manufacturer can regain trust with a new model car that fixes previous defects. Airplanes are in service for decades, and you don't always know what plane you'll get until you are at the gate. Airlines will avoid buying new Boeing aircraft, which will drive down the prices, which will encourage further cost-eaving measures at the expense of quality assurance.