I read a good part of this thread, and I'm still confused::> No one in their right mind would consider bio-diesel or bio-fuel as a 100 percent practical answer (at least I hope people aren't that stupid::>). But, bio-fuel/bio-diesel is practical regionally... Which, is exactly how it is used in the US-to the best of my knowledge, it isn't used widely in areas other than the midwest for precisely this reason. Did I miss something, or did the group assume someone actaully thought bio-anything was the total solution? Art -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist