Yes, perhaps I could supplement that, Mr. McTeague.
The other side of this too is that we need to think about the fuel infrastructure, the fuel itself and the fuel infrastructure. We've made some tremendous progress in the areas of gasoline quality and we're making more progress on diesel quality, but when we start to go into clean diesel and we start to go into ethanol there's still room to manoeuvre there. And that also is an area where the government might want to give some consideration as to how you ensure that the fuel infrastructure is there to service these vehicles, which would create all the momentum necessary to create more demand.