I wouldn't say that's entirely true. I think in the marine sector, yes, we're seeing that happening, but on the on-road, not so much. What we've seen with increasingly stringent emissions standards is that the OEMs have designed their products to have lower tailpipe emissions.
Now that we're going to have carbon-based emission standards—we already do for light duty and they're coming for heavy—that will actually create some space for natural gas, because the lower carbon benefit will be recognized. The challenge with it is that it's going to be at the manufacturer level, so they'll have to comply on a full portfolio basis with the standard.
But up to now carbon has not been a regulated emission for vehicles, and on tailpipe emissions, where natural gas always had a huge advantage, on the diesel side now, of course, that has been closed. In the last two rounds of emission standards, diesel has basically gotten more complicated to comply.... Natural gas still has some inherent simplicity, which is an advantage, but yes, I think regulation is a very important driver generally for a lot of societal reasons.
Is it going to assist in a big way in terms of this fuel coming into the market? I don't see it too much. It's going to help. It will be an assist. But there have to be other things. It has to have the economics. It needs to have the other pieces to make that work, I think, on the on-road side of it, for it to be significant.