Well, here's my 20 cents worth.
I have dealt with Ethanol derived products for over 15 years. Namely, the "startyabastard or aerostart" brands.
This stuff, is like cocaine to an engine. Once it likes it, its great, but age catches up and pretty soon, it relies on.
Particularly Diesel motors.
I have seen some earthmoving machines that rely so heavily on this stuff, it can take a can to start the engine on a warm day.
Even though, printed on the can, states that "this product has anti knock and extra additives to help your engine start without damaging it."
One of the most underated - misrepresented items on the can.
Dam certain someone will have to sue these companies for misrepresentation.
If you don't believe me, ask a earthmoving contractor, on what Ethanol cans do to the engines.
So, to me, the Ethanol debate is great for an alternate solution, but be aware of it's ramifications if it's not used properly. Don't think short term..