I WAS PULLING INTO A PARKING SPACE AT MY CHURCH WITH MY FOOT ON THE BRAKE. AS I NEARED THE END OF THE SPACE, THE CAR SUDDENLY SURGED FORWARD. IT WENT OVER THE CONCRETE BARRIER AT THE END OF THE SPACE AND CAME TO A STOP WHEN THE RIGHT FRONT TIRE HIT A TREE AND WAS KNOCKED TO A PERPENDICULAR POSITION TO THE AXLE. I BELIEVE THIS IS THE ONLY THING THAT CAUSED THE CAR TO STOP. THE AIRBAG DID NOT DEPLOY. THE CAR SURGED FORWARD ABOUT 5-6 FEET AT A HIGH RATE OF SPEED EVEN THOUGH MY FOOT WAS STILL ON THE BRAKE AND I WAS SLOWLY MOVING INTO THE PARKING SPACE.