V12 American LaFrance WW2 Fire truck start up and sound

Here we can see an ultra rare WW2 firetruck built by American LaFrance during WW2 and used by the US Army as a Class750 Fire truck. This truck is powered by an unusual American Lafrance V12 engine. With a displacement of 491 ci (8L) it produces 190hp. Listen to the unusual sound for a truck! Seen at the 2023 Camp Airfield Liberation at the Overboelare-Gerrardsbergen airfield, Belgium.