AS I PREPARED TO SLOW TO A STOP IN A RELATIVES CIRCULAR DRIVEWAY, THE ENGINE BEGAN TO REV UP WITH A HIGH PITCHED WHINE. I TURNED THE WHEEL TO AVOID HITTING A PARKED CAR IN HOPES OF STOPPING THE CAR BUT IT CONTINUED TO GAIN SPEED AND ENDED UP HITTING A PICKUP IN THE SAME CIRCULAR DRIVEWAY. THE BRAKES DID NOT SEEM TO FUNCTION AS THE CAR PICKED UP SPEED.