I keep seeing ads for GM's "Live Green, Go Yellow" campaign for its FlexFuel vehicles. They're really pushing the corn angle -- not only can you see how many barrels of oil that would be saved annually if you switched, but you can also see how many cobs of corn would be used in its place.
So I was thinking that they might come up with different grades of the fuel. E85 is 85% ethanol and 15% gasoline.
But you know, E85 doesn't really say anything to me. If you want ordinary slobs like me to get the idea, you should come up with a system I can relate to while still hyping the corn element. Maybe stations of the future will look like this: