During World War II, fuel shortages forced cars to run on wood gasifiers. By burning wood in a low-oxygen chamber, engines could run on the produced gas. Sweden had over 70,000 wood-fueled cars, and even buses carried huge smokestacks on their backs. They were slow, dirty, and smelled like campfires, but they kept economies moving when gasoline was gone. Desperate times built strange cars, and wood became fuel. | Auto Viral