Large sections of the US ethanol business have been writing to the US car makers
asking them to support higher volume blends of ethanol in future and tying that message to an innovate or die warning... It could be a good idea...there does need to be more buy in from automakers to help
ethanol/butanol fuels get off the ground, and to provide volume demand
that will encourage infrastructure and second generation fuels. That
said, the truly dreadful fuel efficiency of US vehicles, cars, trucks
and semis must also be addressed. Otherwise you're warming the house by
burning the furniture, which you can do but it is very expensive.