THE ACCELERATOR (GAS PEDAL) INITIALLY FELT AS THOUGH IT WERE STUCK, AS IF THERE WAS A BLOCK UNDER IT, WHEN DRIVING AT APPROXIMATELY 20 MPH. THEN SUDDENLY THERE WAS UNINTENDED ACCELERATION WITH THE ACCELERATOR STUCK AT FULL THROTTLE. ONLY AFTER THE VEHICLE HIT 2 PARKED CARS DID THE VEHICLE COME TO A STOP.