CAR WAS SHIFTED FROM DRIVE INTO NEUTRAL FOR OPERATOR TO USE A PARKING LOT GATE MACHINE. THE ENGINE SURGED A LITTLE WHILE IN NEUTRAL BUT SETTLED BACK DOWN. WHEN PARKING GATE OPENED THE OPERATOR SHIFTED INTO DRIVE AND LIGHTLY PRESSED THE GAS PEDAL. THE ENGINE IMMEDIATELY SURGED TO FULL THROTTLE AND RAPIDLY ACCELERATED ACROSS THE DRIVEWAY FOR A FEW SECONDS BEFORE BEING STOPPED BY COLLISION WITH A GRANITE POST. OPERATOR COULD NOT BRAKE HARD ENOUGH TO STOP THE VEHICLE IN TIME. DRIVER INJURED IN CRASH.