Again, much of the industry is consumer-driven, certainly in terms of transportation infrastructure.
We were just discussing the other day some of the new designs they're coming out with. They are basically a solid wing, so that the passenger would be embedded in the wing. You would basically have a screen in front of you that would show you the outside, but there would be no windows.
Pardon the pun, but that will not fly with the consumers. That has been a design kicking around since about 1910. It's an incredibly efficient design, but again, it's consumer-driven. My only comment would be that obviously for the carriers, it will be very important that the pricing be right for them.
The nice thing about the aviation industry is that it's kind of a closed circuit. It's a great place to test biofuels because it's a captured market. The infrastructure that supports it is, as well, a captured market. You're not actually going out and looking for the average consumer in terms of consumption. The airlines know what they're looking for. It's a closed circuit in terms of the infrastructure for delivery and production.
So it would be a good area. The problem is that it's a higher octane and also very specialized fuel. When it comes down to biofuels, it will be interesting to see exactly who's in the lineup to get the biofuels. There's going to be a limited quantity, and most of our transport is road and rail at this point, so....