First, we think a lot of the evidence that exists out there today with regard to our supply scenario should mitigate many of the concerns you mentioned about a spike in prices. However, I think the industry thinks natural gas prices in North America are somewhat unsustainable at the moment because they are so low.
Importantly, as it relates to natural gas compared to petroleum-based products, natural gas as a commodity, as a percentage of the actual dispense price, which is the price of the fuel going into the tank of a vehicle, is much smaller than the percentage of petroleum in the price of a litre of gasoline or diesel. Effectively, natural gas prices could double, and the price of natural gas for a trucker or an automotive user would not double. It doesn't have the same corresponding relationship, because there's considerable energy put into getting the natural gas to the state in which you'll use it in a vehicle. That's where the bulk of the cost of natural gas dispensed into a vehicle is. So importantly, we could see natural gas go to four or five dollars, and we would not see a very significant rise in the price of natural gas for a trucker or an automotive user. That's just because of the total percentage of the commodity in the cost of the end-user asset or product.