WHILE BACKING SLOWLY INTO A PARKING SPACE (2-3 MPH) IN MY APARTMENT PARKING LOT. CAR ACCELERATED RAPIDLY OUT OF CONTROL. BRAKES FAILED. CAR ACCELERATED FTOM 3MP TO 20-35 MPH JUMPED A CURB AND HIT CAR PARKED IN STREET (IMPACT SO HIGH THAT THE CAR ENDED UP IN THE MIDDLE OF THE STREET). IMPACT WAS THE ONLY THING THAT STOPPED THE CAR.