FRONT WHEEL BEARINGS, BALL JOINT AREA ON MY FORD FOCUS 2002 CAME LOOSE AND WHEEL FELL OFF WHILE I WAS TRAVELING ON HIGHWAY. WHEN CAR HIT WALL THE AIRBAG DID NOT OPEN AND SEATBELT DID NOT TIGHTEN. THERE WAS NO WARNING BEFORE ACCIDENT. THOUGHT I WAS GOING TO DIE. LUCKY TO BE ALIVE.*AK