I CAME HOME FROM WORK AND PARKED THE CAR IN HIS NORMAL PARKING SPACE ON THE BLACK TOP. I TURNED OFF THE CAR, PUT THE VEHICLE IN GEAR WITH THE PARKING BRAKE AND LOCKED THE DOOR. A MINUTE LATER, THE VEHICLE WAS ON FIRE. THE FIRE DEPT REPORT WAS UNABLE TO DETERMINE IF THERE WAS A KEY LEFT IN THE IGNITION.