VEHICLE IN FRONT SUDDENLY STOPPED CONSUMER APPLIED THE BRAKES AND PEDAL WENT TO THE FLOOR. CONSUMER WAS UNABLE TO MAINTAIN CONTROL OF THE VEHICLE, AND IT CRASHED INTO A CONCRETE BARRIER. THE VEHICLE BOUNCED OFF THE BARRIER. DRIVER'S SIDE AIR BAG DID NOT DEPLOY, BUT THE PASSENGER'S SIDE AIR BAG DID DEPLOY. DRIVER SUSTAINED HEAD AND BACK INJURIES, AND WAS TRANSPORTED BY AMBULANCE TO A HOSPITAL. VEHICLE WAS TOWED AND TOTALED BY THE INSURANCE COMPANY. *AK THIS CAUSED THE VEHICLE TO TURNED BACKWARDS FACING TRAFFIC IN THE OPPOSITE DIRECTION, AND WAS HIT TWICE HEAD ON. THE DRIVER SIDE AIR BAG DID NOT DEPLOY, BUT THE PASSENGER SIDE DID DEPLOY. THE DRIVER SUSTAINED HEAD AND BACK INJURIES AND WAS TRANSPORTED BY AMBULANCE TO THE HOSPITAL. THE VEHICLE WAS TOWED AND TOTALED OUT BY THE INSURANCE COMPANY. PLEASE FILL IN ADDITIONAL INFORMATION.