I PARKED MY CAR TO UNLOAD GROCERIES. MY CAR WAS ON BUT IN PARK. I WALKED AROUND THE BACK OF THE CAR TO THE PASSENGER SIDE TO UNLOAD THE. AT. THE DOOR WAS STILL LOCKED SO I WALKED BACK AROUND TO THE DRIVER SIDE UNLOCKED THE DOORS AND WALKED BACK AROUND TO THE PASSENGER SIDE. WHEN I STARTED UNLOADING MY GROCERIES, MY CAR STARTED ROLLING/ DRIVING AWAY. NO ONE WAS IN THE CAR AS THIS WAS HAPPENEING. AS I CHASED MY CAR I WAS ABLE TO GET TO MY PASSENGER DOOR AND GET IT OPENED, THE CAR WAS STILL IN THE PARK. THE ONLY THING THAT STOPPED MY CAR WAS THE FRAMING OF A GARAGE. I HAVE MULTIPLE WITNESSES THAT SAW MY CAR IN PARK, AND WATCHED IT DRIVE AWAY. THANKFULLY NO ONE WAS HURT. I DON'T FEEL COMFORTABLE DRIVING THIS CAR ANY LONGER.