I'll assume you are. The additional 20 cents is because ethanol sells for $2.50 per gallon. So if you have to add ethanol (at 10% volume),,well,,you do the math.
The additional 20 cents per gallon is because the proper infrastructure for ethanel is NOT in place. It must be transported by truck or rail car and not by pipeline,,because of its vapor point. (For you know who,,,that means evaporation)...the govt MANDATED IT,,without having proper transport for it.