WHILE CONSUMER'S SON WAS DRIVING ABOUT 10 MPH HE STEPPED ON THE BRAKE PEDAL TO STOP BEHIND ANOTHER VEHICLE, BUT THE BRAKES DID NOT WORK AND HE REAR ENDED TTHE OTHER VEHICLE. DRIVER'S AIR BAGS DEPLOYED, BURNING HIS ARM. PASENGER'S AIR BAG DID NOT DEPLOY. DEALER NOTIFIED. *AK