Here is the result of running a conventional 4 stroke motor on E85 which is available NOW at most fuel stops across Australia.
note a very small improvement in combustion efficiency and a MASSIVE 41% increase in fuel consumption.
read more about it here http://agronomy.emu.ee/vol122/2014_2_1_b5.pdf
So maybe its time to buy one of those cheap Indian tanks, slice it horizontal and weld in a very wide strip of metal to increase capacity so that once we are forced to E85 we will still have a decent range before we need to refuel.
Oh and if you do the math on cost per mile (and not per Gal) the E85 is more than double the cost of regular fuel.