DODGE RAM ELECTRONIC GEAR SHIFTER. THE VEHICLE WAS PARKED AND THE ENGINE WAS LEFT RUNNING ON A CITY STREET. OUR DRIVER GOT OFF THE VEHICLE TO CLOSE THE GARAGE DOOR. ON RETURN TO THE VEHICLE THE VEHICLE WAS ROLLING BACK. THE DOOR WAS LEFT OPEN WHEN GETTING OFF VEHICLE TO CLOSE THE GARAGE. THE DOOR HIT THE FIRST CAR ON ITS WAY ROLLING BACK AND BENT THE DOOR ALL THE WAY TO THE OTHER SIDE. THE VEHICLE THEN ROLLED BACK AND HIT THE LAST VEHICLE. THIS JUST HAPPENED 11/12/18 THE OWNER OF THE VEHICLE DIDN'T WANT TO INVOLVE THE POLICE SINCE THE NEIGHBOR KNEW WHERE DRIVER LIVED