VEHICLE WAS PARKED FOR APPROXIMATELY 2 HOURS AND THE OWNER DROVE ACROSS THE STREET TO THE SHELL GAS STATION, OWNER PARKED THE VEHICLE ON THE SIDE OF THE GAS STATION, AND GOT SOME CASH FROM THE ATM MACHINE. OWNER WALKED BACK TO THE VEHICLE AND IT IGNITED. FIRE DEPARTMENT WAS NOTIFIED AND EXTINGUISHED THE FIRE. THE ENTIRE TRUCK WAS BURNED. THE FIRE MARSHALL SAID THAT THEY THOUGHT IT WAS AN ELECTRICAL FIRE. *AK