I probably shouldn’t let Alex see this. Indymogul does a regular vidcast on low budget film making. This week- stunt fighting.
Where did I put my nunchuks?
Or, as the people at Toolmonger call it “Biodiesel for dummies”. The BioPro 190 from AGR Energy can produce 50 gallons of biodiesel every two days, runs off a domestic power supply and has a small footprint so it could sit unobtrusively in the corner of a garage. You still need to handle chemicals- methanol, lye and sulphuric acid- but they have tried to cut this to a minimum, claiming that one batch requires just half an hour of priming.
You could build your own biodiesel reactor for less, but I imagine a creative fast food outlet that incorporated one of these to fuel its fleet would have less trouble with health and safety than if they set up a bodge with oil drums in the back yard.