I WAS DRIVING SLOWLY DOWN THE STREET, MADE A LEFT TURN INTO A PARKING LOT. PERHAPS I TURNED A LITTLE TOO SHARPLY. THERE WAS A SUDDEN SURGE AND ACCELERATION AND THE BRAKES WERE UNRESPONSIVE. THE CAR "RAN AWAY" WHILE I TRIED UNSUCCESSFULLY TO BRAKE IT. HIT THE BUILDING. I BACKED AWAY AND IT SURGED BACKWARD AND HIT A TREE. THEN I WAS ABLE TO GET IT INTO PARK AND TURN IT OFF.