WHILE TRAVELING AT APPROXIMATELY 55 TO 60 MP CONSUMER'S VEHICLE ROLLED APPROXIMATELY FOUR TIMES, AND DRIVER WAS EJECTED FROM VEHICLE WHILE HE WAS WEARING RESTRAINT BELT. CONSUMER WAS EJECTED FROM VEHICLE DUE TO SEATBACK SNAPPING AND FALLING BACKWARDS, ALLOWING DRIVER TO SLIDE OUT FROM RESTRAINT BELT. DRIVER SUFFERED A BROKEN LEFT WRIST/RIGHT ANKLE/ LEFT CLAVICAL, AND RIGHT SHOULDER; AS WELL AS HAVING TORN LIGAMENTS IN HIS RIGHT KNEE. IN ADDITION TO BITING A PORTION OF HIS TONGUE OFF. *AK THE MANUFACTURER INRESPONSE TO THE CONSUMER THAT INDICATED THE SEAT BACKS WERE DESIGNED TO YIELD PROGRESSEVELY AND INCREASING LOAD, AND ALSO THE SEATS,MEET THE STANDARDS SET BY THE GOVERNMENT. *YH