Energy expert proposes mandating flex-fuel for all U.S. sold cars

This is an interesting idea. I would only add that if we do this mandate, we should consider also mandating that these flex-fuel vehicles or a certain percentage of them be optimized for better fuel economy on ethanol. By taking advantage of ethanol's high octane, this would reduce our use of fossil fuels much more than just using standard flex technology that uses ethanol relatively inefficiently.
Energy expert touts 'flex-fuel': The author-engineer says vehicles that run on biofuels will help the U.S. break its oil addiction.