David Pimental is quoted in many articles lately about how energy inefficient Ethanol is. The fact is Pimental's tests were done many years ago and since that time Ethanol makers have improved production ways thus making it more efficient. Any time someone puts out an article that's neg. look closely at it...they always take results from Pimental's test.
I remember in the past that it was noted Pimental was receiving grants from a big oil company of $50,000 + per year plus I believe he was also hired by a big oil company. Highly unbiased if you ask me