I'm not Charlie but in my opinion, corn is one of the worst due to
competition w/ food consumers. -------------

I'm not Charlie either, but in my opinion corn is the worst because it is a
no-gainer - meaning it takes as much energy (+- depending on data source) to
produce the corn and make the ethanol as you get back from the ethanol.  And
burning ethanol still puts CO2 into the atmosphere.  If it weren't for the
heavy lobbying (read campaign contributions and other perks for politicians)
by the major grain companies (ADM, Cargil, etc.) over the past decade or
more; who are now making big bucks producing the stuff from corn with
government subsidies - there would not be a corn/ethanol program in this
country.

Making ethanol from sugar cane, as they do in Brazil, makes some sense.
They are achieving energy out/energy in of greater than 8 : 1 in the newer
plants.

Al G