WHILE DRIVING 65 MPH DRIVER APPLIED THE BRAKES AND BRAKE PEDAL WENT TO THE FLOOR. THIS CAUSED ANOTHER VEHICLE TO MERGE INTO CONSUMER'S VEHICLE LANE, RESULTING IN A FRONTAL COLLISION. UPON IMPACT, BOTH FRONTAL AIRBAGS DID NOT DEPLOY. DRIVER SUSTAINED HEAD INJURIES, AND WAS TRANSPORTED BY AMBULANCE TO THE HOSPITAL. VEHICLE WAS TOTALED.*AK