No, I have not seen that study. I have seen many studies that have claimed that over the last 20 years. That was the point of my opening comments, because I can look at that study, too, and I have known from the 20 or 30 I've seen before this that people have done this using a static analysis. That's what I was referring to: that it's not “How are we doing it?” when we don't regulate the emissions produced when using biofuels but “What is possible?”
If we're talking about hydrogen or ammonia, we're talking about how we regulate something. There are Dr. Layzell's comments about how producing hydrogen from natural gas involves regulations so that you don't do it the way we are now.
The point of my comments is this: If you regulate the life-cycle emissions, what can be the production? I've seen a lot of data with regard to cases where biofuels are made with zero emissions—life cycle.