BINGO! And the people (gas companies) that put it into the gas. All 3 get subsidies.
Corn used to be the #1 export of the US. In 2011 our #1 export was Gas.
HB - Obviously you're confused - Look at you example this way:
With 10 gal of gas at 21 gpm, your car would take you 210 miles.
In order to travel the same 210 mile trip at 16 gpm would require you to use 13.1 gal of the mix. (210 divided by 16 = 13.1) However the 10% mix is actually 90% gas and that 13.1 gallons of mix actually contained 11.8 gal of gas.
In other words, the 210 mile trip that used to require 10 gal of gas now requires you to use 11.8 gal of gas.
Tom B.
(LongLine)