ON 2/10/18 I PARKED MY CAR ON A HILL ALONG A CURBED SIDEWALK I PUT THE CAR IN PARK AND SHUT IT OFF AND EXITED AND LOCKED THE DOORS. I WALKED TO A RESTAURANT AROUND THE CORNER FOR TAKE OUT WHEN I RETURNED 5 MINUTES LATER AND MY VEHICLE HAD ROLLED BACK ABOUT TEN FEET INTO ANOTHER VEHICLE THAT WAS PARKED ON THE STREET CAUSING DAMAGE TO THE REAR OF MY VEHICLE. I HAD TO PRIOR EVENTS IN MY DRIVEWAY WHERE AFTER I PARKED MY CAR IN MY DRIVEWAY AND IN THE MORNING I FOUND THE CAR BACKED ED OUT INTO THE ROAD WAY.