PREMATURE VAPORS FROM THE AIR BAG ESCAPED INTO THE COMPARTMENT OF THE TRUCK CHOKING THE DRIVER UNTIL UNCONSCIOUS. THE JEEP THEN CROSSED THE HIGHWAY/MEDIUM, STRIKING ANOTHER VEHICLE HEAD ON AND THEN ROLLING FOUR TIMES. THE AIR BAGS NEVER DEPLOYED AFTER THE EXTENT OF DAMAGE FROM COLLISION AND ROLLOVER. ESTIMATED SPEED OF IMPACT WAS 35 MPH. PLEASE DESCRIBE DETAILS. *MR