In 1942, when wood gas had not yet reached the height of its popularity, there were about 73,000 wood gas vehicles in Sweden, 65,000 in France, 10,000 in Denmark, and almost 8,000 in Switzerland.
1942. je bilo oko 73 000 motornih vozila na drvni plin u Švedskoj, 65 000 u Francuskoj, 10 000 u Danskoj i gotovo 8 000 u Švicarskoj.