WHILE STOPPED AND IN PARK THE VEHICLE STARTED ROLLING, I ATTEMPTED TO JUMP IN THE VEHICLE BUT COULD NOT PULL MYSELF ALL THE WAY IN. I WAS ABLE TO YANK THE KEYS FROM THE IGNITION AND THEN I COULD NO LONGER RUN ALONG SIDE THE VEHICLE AND I FELL ON THE ASPHALT. HOWEVER, THE VEHICLE CONTINUED ROLLING UNTIL IT BECAME HIGH CENTERED ON A LARGE ROCK. FOUR WITNESSES CONFIRMED THAT THE VEHICLE WAS IN PARK AND THE KEYS WERE OUT OF THE IGNITION.