OUR 2004 F250 DIESEL 4X4 SUPER DUTY WAS PARKED IN THE DRIVEWAY OVERNIGHT, PROPERLY PLUGGED IN DUE TO THE COLD. A NEIGHBOR WOKE US UP TO STATE IT WAS ON FIRE. THE ENTIRE FRONT AND INTERIOR OF THE TRUCK WAS ENGULFED IN FLAMES BEFORE THE FIRE DEPARTMENT ARRIVED. AFTER IT WAS EXTINGUISHED, THE COUNTY FIREMAN POINTED THE BELIEVED THE POINT OF IGNITION APPEARED TO BE AT THE FIREWALL ON THE DRIVERS SIDE DUE TO THE FACT THAT THE MASTER BRAKE CYLINDER & BATTERY WERE DISINTEGRATED. PLUS THE SECONDARY BATTERY & RADIATOR WERE PARTIALLY INTACT WHICH ARE IN THE FRONT. THE FIRE DEPT STATED THAT IF IT HAD BEEN A FRONTAL POINT OF IGNITION DUE TO THE BLOCK HEATER THE RADIATOR & BATTERY ON FRONT PASSENGER SIDE WOULD'VE BURNED FIRST DUE TO ALUMINUM MATERIALS. *TR