Summer yea dude not really a new concept. Almost all the phx metro work trucks are dual fuel and you can have your car/truck modified as well for $5-$7k. No yearly tags, perm hov privileges, no emissions, and super cheap fuel.
Immortal with the e85 to help lubricate the pump, upper topend, and keeps the fuel lines healthy with running that much alcohol. I had to use it with all of my classic cars including my cherry 68 beetle.