Good links! I didn't think that a Yugo could get any uglier, but that wood smoke fuel conversion showed me how wrong I was! I can relate the wood smoke fuel concept to making char-cloth. When the super heated cloth inside the airtight can starts venting the gasses out through the vent hole, the gasses are very flammable. One might want to use something like a Van, so that more of the contraption could be contained? I'll wait untill gas gets to $5.00 per gallon, or more before I start sawing into my F150.