VEHICLE WAS BEING DRIVING APPROXIMATELY AT 55 MPH. ENGINE LOSS POWER, GAS PEDAL LOST RESISTANCE AND WENT ALL THE WAY DOWN TO THE FLOOR BOARD. VEHICLE WAS PULLED OVER TO THE SIDE OF THE ROAD AND ENGINE WAS STALLED AND ALL THE DASH LIGHTS WERE FLASHING ONE AND OFF. ENGINE STARTED TO HAVE WHITE SMOKE COMING FROM UNDER THE HOOD. AFTER A FEW MINUTES, THE WHITE SMOKE TURNED INTO BLACK SMOKE AND THE ENGINE CAUGHT ON FIRE. VEHICLE WAS ENGULFED IN FLAMES AFTER A FEW MINUTES.