I doubt I would run an ethanol blend in my sports car. For the same octane fuel, you get lower fuel efficiency and less power than if you use non-ethanol gas. Also, the ethanol blend used to be cheaper. As of ~2 weeks ago, that it no longer true. So I see no benefit to using it. I really don't believe it can make a large dent in our dependancy on middle eastern oil. If it did, I may use it. Just my $.02.
Just wanting and waiting...