institute of transportation studies university california davis liquid biofuels for national academies workshop on oil peaking daniel sperling professor and director october 20 2005 is one several potentially attractive long term energy supply options vehicles petroleum like fuels from unconventional fossil sources used in combustion engines maybe fuel cells made tar sands heavy shale coal electricity bevs plug hybrids many including nuclear hydrogen ignored by bob hirsch this morning now with little benefit can be residues grasses trees as well corn sugar cane the question how important a modest part solution us few other countries but to move beyond ethanol expensive fairly high so are alternatives environmental impacts huge ghg benefits some negative also easy make happen at small scale yes caution must consider competing uses land biomass very different industry organization needed overriding issue possibility transitioning
