AFTER PLACING THE VEHICLE IN PARK I LEFT TO GO INTO A BUILDING. ON MY RETURN THE VEHICLE WAS GONE AND WAS FOUND DOWN THE BLOCK AND WAS INVOLVED IN AN ACCIDENT. IT APPARENTLY DROVE OFF ON IT'S OWN. VIDEO OF THE ACCIDENT CONFIRMED THAT NO ONE WAS DRIVING. AS THE DRIVER, I DID PUT THE VEHICLE IN PARK AND COULD NOT FIGURE OUT WHAT HAPPENED. THE PARKING BREAK WAS NOT APPLIED. THE ONLY CONCLUSION WAS THAT SOME HOW THE VEHICLE SLIPPED INTO GEAR.