ON AUGUST 16, 2018 AT APPROX 1030 PM MY DAUGHTER WAS DRIVING ON ROUTE 5 IN HOLLIS CETNER MAINE AT APPROX 50 MPH AND CAR STARTED RUNNING ROUGH, SMOKE STARTED COMING FROM UNDER HOOD. PULLED OVER TO THE SIDE OF ROAD AND CAR WAS ON FIRE UNDERNEATH ENGINE, MELTING THE ENGINE. FOUND MELTED ENGINE PARTS (PISTON HEADS, CONNECTING RODS) ON THE GROUND ALONG WITH OTHER MELTED PARTS. FIRE WAS PUT OUT BY HOME OWNER ON ROUTE 5