Can't find it in too many places really. I wouldn't use it if i found it to tell you the truth. The cost benefit of it being a few cents cheaper doesn't offset the fact that it induces poorer gas mileage. When i get my hands on a superchips flaspaq i'm going to disable the E85 mode and put it on the 87octane mode. Supposed to help the power and mileage a bit since the engine no longer looks for the possibility to retard the timing for E85. I even went as far as to remove the Flex Fuel Badge from my XK. I don't even like the fact that farmers are subsidized to grow corn as a fuel alternative instead of other crops which would bring up the price of produce here in the US. It's just not a good alternative to gasoline in any real sense in my opinion.

However, in place like Brazil where they make E85 from leftover Sugar cane because it's already in existence and have an abundance of the stuff and no other use for it it's not a bad thing. It really helps out down there. But here in the US not so much.