To come back to the vehicles, in the past, natural gas has historically always traded at a 6:1 ratio to oil. Today it's over 20:1, and with that, natural gas is becoming more of a competitive fuel. What hasn't progressed, because there has been virtually no research done on it, is the advancement of natural gas engines for the transportation sector. In North America you really only have one primary company doing that, so what really needs to happen in the trucking industry is some additional technology. Some additional funding is needed on the manufacturing side of it to advance that technology.
We believe that at some point it becomes more and more economical as time goes on. We need to break that kind of chicken-and-egg cycle that we're in right now.