Its a shame they can't make it from weeds. Oh wait...
http://www.hemp.com/hemp-education/u...emp/hemp-fuel/
Hemp ethanol/methanol – made from the fermented stalk.
To clarify further, ethanol is made from such things as grains, sugars, starches, waste paper and forest products, and methanol is made from woody/pulp matter. Using processes such as gasification, acid hydrolysis and enzymes, hemp can be used to make both ethanol and methanol.