Biofuels not the answer for our cravings for the combustion automobile.

Food Versus Fuel: By using more bio fuels yes it would lower the price of fossil fuels but by creating more demand for corn and other crops it would raise the prices of our food worldwide.
http://news.yahoo.com/s/afp/20080704/pl_afp/climateenvironmentbiofuelsworldbankusbritain;_ylt=AhbEReMu0Xhs9Xe9It759DGs0NUE


Bio fuels don't lower greenhouse gasses when one considers the total amount emissions during the production of the fuel.
http://www.nytimes.com/2008/02/08/science/earth/08wbiofuels.html

a combustion engine's efficiency is reduced by bio diesel as well.
http://asae.frymulti.com/abstract.asp?aid=23558&t=2