Well, the issue with using corn and soybeans for that purpose is the possible impact on food and food prices. There were good environmental and operational reasons for having ethanol as a component of fuel, just from the point of view of how well the machinery worked. When we started to see a lot of programs encouraging higher amounts of ethanol, at the same time we saw a lot of disruption in grain prices worldwide. So that's a concern.
I don't have an analysis about that, but it is an important thing to keep in mind. If we have vast tracts of our food-producing territory producing fuel, are we making sure we are also meeting the food needs of our communities globally?