I WAS BACKING UP ON GRASS WHEN THE CAR ACCELERATED BACKWARDS. I PANICKED BECAUSE I THOUGHT I HAD MY FOOT ON THE BRAKE AND THEN I WAS CONFUSED REACHING FOR THE BRAKE PEDAL AND THEN GAS PEDAL. MY FOOT WAS GOING BACK AND FORTH. I SLAMMED ON THE BRAKE TO STOP BUT HIT A FENCE POLE DESTROYED BUMPER. THE CAR SEEMED TO BE MOVING ON ITS OWN AND I MAY HAVE HIT THE GAS PEDAL BY ACCIDENT THEN SLAMMED ON THE BRAKE. NO ONE WAS HURT BUT SHOOK UP. IT HAPPENED AGAIN ON DECEMBER 18, 2013. I WAS BACKING UP AGAIN IN WAL-MARTS PARKING LOT AND FOR SOME REASON IT ACCELERATED AGAIN AND I REMEMBER SAYING NOT AGAIN. THAT TIME I KNOW MY RIGHT FOOT WAS NOT ON THE GAS PEDAL AT ALL. I PANICKED AGAIN AND SLAMMED ON THE BRAKE HITTING ANOTHER VEHICLE BEHIND ME. THIS CAR JERKS A LOT AND IT HAD ACCELERATED GOING FORWARD TWICE, ONCE IN A PARKING GARAGE AND DAMAGED MY FRONT BUMPER, THEN AGAIN I ALMOST WENT OVER THE RAIL ROAD TRACKS PARKING BY A BUSINESS. I DO NOT FEEL SAFE IN THIS CAR. TOYOTA IS INVESTIGATING MY CLAIM NO.[XXX]. INVESTIGATOR WILL LOOK AT MY CAR NEXT WEEK. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)*TR