A STOPPED 2003 FOCUS SEDAN WAS REAR-ENDED AT A TRAFFIC LIGHT BY A MAZDA 626 RESULTING IN LIMITED FLEXIBLE BUMPER DAMAGE TO THE FORD FOCUS, BUT SUBSTANTIAL SPINAL DAMAGE TO THE HEALTHY, 22 YEAR OLD DRIVER WHO WAS SECURELY SEAT-BELTED INTO THE DRIVER'S SEAT. WHAT WAS LACKING IN THE SEAT DESIGN TO PROTECT THE DRIVER FROM SUCH INJURIES?