I LEFT MY CAR RUNNING WITH THE TRANSMISSION IN PARK. I WENT INTO MY HOUSE FOR A FEW MINUTES. WHEN I LEFT MY HOUSE I SAW THAT MY CAR WAS ROLLING DOWN THE DRIVEWAY. THE CAR HIT A TREE AND CAME TO A STOP. WHEN I GOT TO THE CAR IT WAS STILL RUNNING AND IN REVERSE GEAR. NO ONE WAS IN THE CAR AT THE TIME. I AM POSITIVE THAT WHEN I LEFT THE CAR IT WAS IN PARK.*DT