"Dave" wrote in message
...
On Thu, 11 May 2006 16:41:24 GMT, "Maxprop" said:

The numbers I've seen indicate 1.5 gallons of E85 (the highest useable
concentration of EToH) roughly equal one gallon of gasoline.

I think that's a slightly different issue. As I understand it, what you're
saying is that it takes 1.5 gallons of ethanol to provide the same
effective
energy output as 1 gallon of gasoline--strictly an energy output issue.
The
numbers I was talking about related to inputs to and output of the ethanol
itself, and suggested that one used about 2/3 of a gallon of petroleum
products to produce 1 gallon of ethanol.

The numbers I've seen, with respect to cellulosic ethanol production, are
far less. I tried to relocate the website, but had no luck.

Max