I am glad to see that people are finally getting the message, big cars and trucks are no personal transportation vehicles! We have three vehicles, a 2002 Prius (still running fine with 120,000 miles on it) which we picked up used in January and averages 48mpg. That is our daily commuting to car vehicle. My wife and I ride together for the 100 mile round trip.
Our second vehicle is a Honda CRV (25mpg) which sits at home most of the time unless the snow is deep or we have to tow something.
Our third vehicle is a 250cc Scooter from Kymco. That gets 70mpg+ and is the alternate when my wife and I cannot ride together (except in the dead of winter).
So, the solution may be a mixed vehicle pool. Get a commuting car or bike and save the special purpose vehicles for what they are needed for.
Last, corn ethanol is a bad idea in the long run. It is cheap right now because of enormous subsidies. The BTU output is less than that amount needed to produce it. It may actually have a bigger carbon footprint than oil.
do it right, or do it over and over, it's up to you