Does look promising if they can actually produce it as inexpensively as they think they can---they are predicting in the current market to be able to produce it for about $2 a gallon.

Only drawback I've seen is that it weighs about 7 lbs a gallon, or a little more.
 

Marl Halbrook 
Albany, Ga 
Starduster Too N88GG
BK-13005

http://websites.expercraft.com/marl/  (BK-1 Build)

http://websites.expercraft.com/halbrook/ (Starduster Too Recover)