Ya may not save any money as you will be consuming more fuel.
example...typical oval track racer might consume 5 gallons of gasoline in a race where the same race car on alcohol would require 10 gallons..
It's fairly new here in St.Louis and I know of only 1 place to get it here in our neighborhood so the juries still out. I've got a cop buddy that came in asking me about it last week and I didn't have any other answer other than what I explained above,but he is gonna try it out and let me know the results.
I'll post his results if and when he gets back to me.