THE CAR WAS PARKED AND OFF IN OUR DRIVEWAY FOR 15 MINUTES -HORN STARTED WENT OUT SAW SMOKE CALLED 911 AND BY THE TIME BACK AT FRONT DOOR FLAMES FROM FRONT END. FIRE DEPARTMENT CAME AND PUT OUT FIRE -CAR TOTALED. WORRIED ABOUT SPONTANEOUS COMBUSTION ESPECIALLY IF CAR PARKED IN GARAGE OR CLOSER TO HOUSE OR IF PEOPLE INSIDE