I WAS DRIVING MY TRUCK ON A CITY STREET IN BROOKLYN, NEW YORK ( FLATBUSH AVE) WHEN I SUDDENLY SMELLED SMOKE FOLLOWED BY FIRE COMING FROM THE HOOD. I DID NOT HIT ANY BUMP AND WAS NOT INVOLVED IN ANY ACCIDENT. BY THE TIME THE FIRE DEPARTMENT CAME, THE ENTIRE FRONT COMPARTMENT OF THE TRUCK WAS ON FIRE.