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Old 02-07-2012, 04:40 PM   #5 (permalink)
Ken Fry
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Quote:
Originally Posted by Arctic Fox View Post
The question: Is this still considered progress?
I'd say so. Your are certainly using a ton less gas. You may or may not be more energy (and CO2 footprint) efficient overall, depending upon how the ethanol is made. This is where the GREET tables come into play.

Argonne GREET Model
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