WAS DRIVING VEHICLE 60MPH & HAD JUST CHECKED REARVIEW MIRROR. NOTICED FLAMES DROPPING FROM UNDERNEATH VEHICLE. VEHICLE THEN FILLED WITH BLACK SMOKE. PULLED VEHICLE TO SIDE & LEFT IT. VEHICLE THEN BLEW UP. FIRE DEPT ARRIVED & EXTINGUISHED THE FLAMES. HAD INDICATED THE PROBLEM ORIGINATED FROM THE ENGINE. VEHICLE WAS TOTALED. *AK