WHILE PARKING OUR 2004 TOYOTA SIENNA MINI VAN, TAKING MY FOOT OFF THE ACCELERATOR AND STEPPING ON THE BRAKE PAD, THE VEHICLE BEGAN TO ACCELERATE RAPIDLY. THE ACCELERATION WAS SO RAPID THAT THE TIRES SQUEALED AS IF THEY WERE BURNING RUBBER. THE VEHICLE STOPPED WHEN IT HIT A PARKED CAR IN FRONT OF ME. *TR