BD: What about the production economics?Butanol vs. Ethanol (Infrastructure)
BuMx: Using our process, a 100 MGy corn ethanol will make 80 Mgy of biobutanol, but every fuel molecule will have 25 percent more energy, so its a balance. Also, with 16 percent butanol, you are getting higher concentrations of a higher energy molecule, so you are getting real improvements in fuel economy and efficiency.
And I will readily admit to being a bit biased. I've already said I think our best bet would be to focus on butanol and scrap the entire ethanol talk.