The contact owned a 2009 Chevrolet Malibu. The contact stated that while driving approximately 20 MPH, the driver's side curtain air bag erroneously deployed and struck the left side of the contact's head. The contact immediately pulled over to the side of the road. No warning light was illuminated before or after the failure. Police Officers arrived at the scene, but no police report was filed. The contact sustained a headache and a partial left-ear hearing loss. The contact received a paramedic evaluation. The following day, the contact was taken to the Emergency Room, where it was confirmed that the contact had not sustained a concussion. The vehicle was towed to an autobody shop, where it was deemed totaled by the insurance company. The dealer was not contacted. The manufacturer was notified of the failure and informed the contact that a field inspector would be sent to investigate the failure; however, the contact was later informed that the case was closed because the root cause of the air bags deployment could not be determined upon inspection. The failure mileage was approximately 68,000.