PULLING OUT OF CARWASH.TURNING LEFT IN CARWASH LOT. CAR ENGINE REVED UP, CAR LUNGED FORWARD AT HIGH SPEED. SLAMMED ON BRAKE BUT BRAKE PEDAL WENT RIGHT TO THE FLOOR. CAR THEN SIDE SWIPED CARWASH VACUUM SYSTEM ON PASSENGER SIDE SCRAPING AND DENTING BOTH PASSENGER SIDE DOORS. THREW CAR INTO PARK AND SHUT OFF ENGINE TO STOP WAITED 5 MINUTES. TURNED CAR BACK ON PUT CAR IN DRIVE. SLOWLY MOVED AND PUT BRAKE ON. BRAKES WORKED. DROVE 5 MILES TO GET HOME. NOW AFRAID TO DRIVE CAR.