Ethanol is a popular fuel made from corn in the United States. It produces roughly 52% less pollution than gasoline and is routinely mixed with gasoline for consumer use. Start-ups have been keen to use ethanol to reduce pollution in trucking and aviation. Capturing and sequestering carbon made during production further improves ethanol's eco-friendliness.
> cough, cough< horseshit>cough<
We got stuck with it, by law. Anyone running 'legacy' (carbureted) engines or small engines including outboard motors knows ethanol is notorious for screwing up fuel systems. Anyone who can get 'no ethanol' fuel knows it gives better mileage and better power because the energy density is greater. Forcing people to use more fuel to do the same job is hardly 'energy efficient', and it does not take into account all the CO2 generated by making the ethanol. Burying CO2 (which takes energy, not to mention the emissions generated in creating infrastructure to do so) doesn't really improve anything, it just buries it.
Especially considering that anthropogenic CO2 is not proven to be a driving forcing factor in the 'global warming' everyone is having fits over (with the planet coming out of an Ice Age), and the CO2 will not be involved in the secondary or tertiary recovery of oil currently in situ in any reservoir, this is just expensive posturing, and a big cash cow for someone.