MOTORCYCLE STOPPED AT STOP SIGN, WAITING AND IT TOOK OFF, MOTORCYCLE GAS ENGAGED, EMERGENCY BUTTON PUSHED AND MOTORCYCLE WOULDN'T SHUT OFF. DRIVER LOST CONTROL. CLUTCH AND THROTTLE APPEARED DEFECTIVE, DRIVER SUFFERED INJURIES; BROKEN BACK/PELVIC BONE/TAIL BONE, AND FIVE RIBS. MOTORCYCLE NOT TOTALLED. DEALER NOT AWARE OF THE PROBLEM, DRIVER UNABLE TO CONTACT. PROVIDER FURTHER INFORMATION. *AK