A freind of mine told me that he usually gets 32mpg driving his compact car with a 4 cylinder engine.
He told me that if uses E10 he only gets 29 mpg.
That was measured on a trip he took of 320 miles, measring it on 2 occasions once with E10 once without.
That means a burn of 10 gallons of gasoline on that trip gave him 320 miles or 32mpg.
With E10 he needs close to 11 galons to get the same milage.
So essentially this is not not very cost effective you pay more for less.
E10 IS NOT THE ANSWER!
The trickledown effect of it's cost through higher food prices is going to make it cost SOooooo much more than gasoline not only at the pump but at the grocery stores as well.
This is a poor excuse for a solution.
We must have smarter people with better brains that can come up with a different approach.
But then again it's all about making some one else rich at the hands of the little guy who can't afford much as it is.

Ethanol was NEVER about increased or sustained fuel mileage. Car makers can make cars that run very well on ethanol, they just don't sell them here.

I have a friend that drives a late 90's Corolla jointly built with GM with an automatic transmission. They were only produced for a two year period, but he gets 43 MPG.

Car makers can make cars that run very well with ethanol, they just don't. It's like leaded gas.

My old car did better with leaded gas than unleaded. I used a lead additive for years.

But eventually we need to do what is better for the whole, not just you.

That means ethanol fuel, ethanol powered cars, etc...