WHILE REVERSING OUT OF A PARKING SPACE ACCELERATOR PEDAL STUCK WHEN ATTEMPTING TO PUT THE VEHICLE INTO THE DRIVE GEAR. THEN, VEHICLE SUDDENLY ACCELERATED AT A HIGH SPEED, WENT INTO A BRICK WALL, THEN THROUGH AN OFFICE WINDOW. DRIVER SUSTAINED A CONCUSSION/2 BROKEN FRACTURES IN THE ORBIT OF RIGHT EYE AREA, AND A SPRAINED NECK. THE CAUSE OF THE FAILURE WAS UNKNOWN. THE VEHICLE WAS TOTALED.*AK THE CONSUMER HAS BEEN ON MEDICATION FOR HIGH BLOOD PRESSURE SINCE THE ACCIDENT. *TC