Worth watching this movie and then going to the home page to look at the commetns/ take part. Interesting conversation -- at least at first -- about fuel efficiency. http://www.youtube.com/watch?v=zfcEwEo5yRc
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Read the complete post at http://www.icis.com/blogs/biofuels/archives/2008/03/biofuel-energy-balancre-and-ca.html