Tennessee is the only state I have seen it.I'm just getting familiar with this.
I moved from California where it's not available.
Seeing more of it in Tennessee.
I live on the west side of the country.I use 90 ethanol free recreational fuel in my 2.7L. It gets the same as all other types of ethanol fuel. 22 to 24 mpg depending on if i do more 2 lane highway driving. Maybe a FPP Procal tune will make use of the higher octane.