I WAS PULLING INTO A PARKING SPOT AT LESS THAN 10 MPH WHEN THE ENGINE REVVED LOUDLY, LURCHED FORWARD, JUMPED THE CURB AND CONTINUED UP A SLOPE. I WAS UNABLE TO STOP THE CAR. I WAS ABLE TO TURN THE WHEEL TO AVOID A HEAD-ON COLLISION WITH A BUILDING, AND INSTEAD HIT THE BUILDING ON AN ANGLE ON THE LEFT FRONT SIDE. THE CAR STOPPED ONLY AFTER HITTING THE BUILDING. THIS IS THE THIRD INSTANCE OF "UNINTENDED ACCELERATION" I HAVE EXPERIENCED WITH THIS VEHICLE. THIS WAS THE MOST SERIOUS EPISODE. THE OTHER TWO EVENTS WERE SIMILAR. IN THE FIRST INSTANCE THE CAR AGAIN ACCELERATED WHILE I WAS PARKING AT LOW SPEED AND HIT A FENCE. IN THE SECOND INSTANCE THERE WAS NO DAMAGE OR INJURY AS I WAS ABLE TO PUT THE CAR INTO PARK.