WHILE BACKING OUT OF DRIVEWAY, ,DRIVER PUT GEAR INTO REVERSE WITH FOOT ON BRAKE, AND VEHICLE SUDDENLY ACCELERATED AT HIGH RATE OF SPEED, RUNNING THROUGH A HOUSE . DRIVER HAD FOOT ON BRAKE THROUGHOUT THE INCIDENT, AND EVEN TRIED TO PUMP BRAKES, BUT VEHICLE WOULD NOT STOP. BRAKES DID NOT RESPOND.PLEASE PROVIDE FURTHER INFORMATION. *AK