THE VEHICLE WAS PARKED IN MY DRIVEWAY AND HAD NOT BEEN USED SINCE 10PM THE NIGHT BEFORE. AT 7AM I NOTICED SMOKE COMING FROM THE BACK OF THE VEHICLE AS I LOOKED OUT MY WINDOW. I WENT OUT AND THERE WAS A SMALL FLAME UNDER THE BUMPER NEAR THE EXHAUST PIPE ALSO SOME WIRES SEEMED TO BE ON FIRE. I WENT TO GET A HOSE, AND WHEN I RETURNED THERE WERE FLAMES ERUPTING UP NEAR THE TAIL LIGHT. A NEIGHBOR PUT OUT THE FIRE WITH A DRY CHEMICAL EXTINGUISHER. I CALLED THE FIRE DEPARTMENT, AND THEY SAID THEY HAD NO IDEA WHAT COULD'VE HAPPENED, BUT SUSPECTED AN ELECTRICAL SHORT. I AM TAKING TO THE DEALER TO UNDERSTAND.