WHILE IN REVERSE AND BACKING MY 2004 TOYOTA COROLLA INTO MY GARAGE THE CAR SUDDENLY ACCELERATED AND I HIT THE REAR OF THE GARAGE. I AM POSITIVE I DID NOT HAVE MY FOOT ON THE GAS PEDAL. THE ENGINE WAS STILL RACING WHEN I PUT IT IN DRIVE AND DROVE OUT OF THE GARAGE . I HAD TO RUN INTO A SNOWPILE ON THE FRONT LAWN TO STOP THE VEHICLE. AFTER THE ENGINE WAS TURNED OFF I LOOKED AT THE FLOOR MAT AND SAW NOTHING WRONG WITH IT. THIS SAME PROBLEM WHILE REVERSING INTO THE GARAGE HAPPENED IN SEPT 2005. AT THE TIME I JUST THOUGHT THE MISTAKE WAS MINE, NOW AFTER THE SECOND INCIDENT I AM CONVINCED THERE IS A MECHANICAL PROBLEM WITH THE CAR. *TR