WHILE ATTEMPTING TO ROLL THE VEHICLE FORWARD TO CLEAR A DOORWAY, THE VEHICLE JUMPED FORWARD ABOUT 6 FEET. AT THAT TIME I PULLED MY FOOT OFF THE GAS AND PUSHED THE BRAKE PEDAL TO THE FLOOR. THE VEHICLE STOPPED MOMENTARILY, THEN BEGAN TO ACCELERATE PICKING UP SPEED RAPIDLY AS EVIDENCED BY THE REVVING OF THE ENGINE. I CONTINUED TO PUMP THE BRAKE SINCE HOLDING IT TO THE FLOOR WAS DOING NOTHING. BY THIS TIME I HAD GONE THROUGH A CHAIN LINK FENCE, THROUGH A DITCH OVER A CURB AND CONTINUED TO PICK UP SPEED TO PASS THROUGH A CONCRETE BLOCK WALL AND INTO THE BACK OF A PARKED R.,THE VEHICLE IMPALING ITSELF ON THE STEEL PIPES OF A MOTORCYCLE CARRIER ATTACHED TO THE BACK OF THE R.V. THE VEHICLE COULD NOT MOVE ANY FURTHER BUT THE ENGINE WAS STILL REVVING. NEEDLESS TO SAY THE RAV4 WAS TOTALED AND AMAZINGLY I SUFFERED ONLY MINOR BUMPS AND BRUISES. AT NO TIME DID ANY OF THE AIR BAGS DEPLOY. *TR