Wood Burning Trucks and Cars

Curiously enough, an ordinary normally aspirated gasoline engine can be converted to run on wood chips for about $124. About twenty-five years ago the magazine "Mother Earth News" sold kits for this purpose. Such vehicles (cars, trucks and buses) were common during the first world war and second world war in Germany and Russia. Wood chips are placed in a large container and allowed to smolder. The vehicles muse no liquid fuel. Only the smoke from the wood.  The resultant gas is flammable and used to explode in the cylinders. They don't go very fast.