I just don't think any bio fuel will be a replacement. Maybe a helpful addition but we need something to replace oil for vehicles use.

The World consumes way too much oil and would any other type of bio fuel as well if it was the only source. We need to find some type of source that does not deplete or pollute other resources - so far there is nothing, but the search continues.

http://en.wikipedia.org/wiki/Cellulosic_ethanol

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