Thanks to all of you that have shared your opinion on this topic...obviously many of you know quite a bit (much more than I do) about the composition of different types of fuel. I think the idea of this a biofuel engine is just to get people talking about the possibilities and the technology itself, not only its use within the RC community, but within other applications as well. Am I alone in thinking that many forms of racing pioneer new engineering and technology that eventually descends into consumer uses?