WHILE DRIVING CONSUMER APPLIED THE BRAKES AND PEDAL WENT TO THE FLOOR. THIS CAUSED CONSUMER'S VEHICLE TO REAR END ANOTHER VEHICLE IN FRONT. UPON IMPACT, DRIVER'S SIDE AIR BAG DID NOT DEPLOY. BUT PASSENGER'S SIDE AIR DID DEPLOY. DRIVER SUSTAINED NECK AND BACK INJURIES, AND WAS TAKEN TO THE HOSPITAL FOR OBSERVATION. THE VEHICLE WAS TOTALED BY THE INSURANCE COMPANY. *AK