TL* THE CONTACT OWNED A 2007 CHEVROLET IMPALA. WHILE DRIVING APPROXIMATELY 50 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE FAILURE CAUSED THE CONTACT TO CRASH THE VEHICLE INTO A RAVINE. THE AIR BAG IN THE STEERING WHEEL WAS THE ONLY AIR BAG THAT DEPLOYED. A POLICE REPORT WAS FILED. THE CONTACT SUSTAINED A BROKEN NECK, RIBS, BACK, FOOT, AND ANKLE. THE PASSENGER SUSTAINED A BROKEN COLLAR BONE, RIBS, AND ANKLE. IN ADDITION, THE PASSENGER'S LIVER AND SPLEEN WERE LACERATED AND BOTH OCCUPANTS REQUIRED MEDICAL ATTENTION. THE VEHICLE WAS DESTROYED. THE VEHICLE HAD NOT BEEN DIAGNOSED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 73,000.