Useful if you have plenty of wood and need to run a motor kind of off-grid. Now, combine this with those outdoor water heaters that burn wood to heat your house/water and a small motor for a generator and batteries and you are pulling out as much as you can. Archive: https://archive.today/mn9K7 From the post: >>Every now and then in histories of the 20th’s century’s earlier years, you will see pictures of cars and commercial vehicles equipped with bulky drums, contraptions to make their fuel from waste wood. These are portable gas generators known as gasifiers, and to show how they work there’s [Greenhill Forge] with a build video. When you burn a piece of wood, you expect to see flame. But what you are looking at in that flame are the gaseous products of the wood breaking down under the heat of combustion. The gasifier carefully regulates a burn to avoid that final flame, with the flammable gasses instead being drawn off for use as fuel.