This is a bit of a blast from the past, but it is a good lesson on how people get around shortages of anything including petrol. I had heard of tractors and cars running on wood gas but who would have thought that charcol made a clean energy source which could power up the little engines that make life worthwhile? He gets the range and the speed it doesn't go into much detail but it is basically a hopper filled with charcol a fire at the bottom, the gas gets filtered through the charcoal, and mabey another filter for a bit of extra clean burn and then straight into the engine.
