I saw one of these at the Peterson Automotive museum in Los Angeles. It’s a beautiful truck. There’s a picture in the link below:
From the Peterson website: “The same circumstances that made electric cars viable in Europe during World War II, also made vehicles that burned coal gas practical. Also called “wood gas,” the fuel was created by partially burning wood or coal to produce a gaseous substance that could be used for combustible fuel. Although the fuel gave poor performance and the gasification process created excessive air pollution, it was deemed acceptable during wartime because it allowed a large number of vehicles to remain operational with the addition of a special gasification apparatus and a few straightforward engine modifications. Bulky and unattractive, virtually all gasification systems were removed from vehicles immediately after the war and cars so equipped are now extremely rare.”