I would first say it's incredible that there isn't a resource projection I see on an annual basis that doesn't go upward. There are tremendous opportunities coming, and a lot of that is innovation and technology, those firms we were talking about previously finding better ways and finding better resources and estimating those.
The crude market in North America, light and heavy, the market for our heavy crude on the gulf coast, which would be served by Keystone, is pretty fixed cost in terms of its capacity. That's half of the United States' refining capacity, so that market will likely not transition much over the next 20 to 30 years.
The market for lighter crudes, in terms of refining complexes more in the eastern parts of North America, eastern Canada and the eastern United States—and we're seeing a lot of rail move to that market.... As the U.S. continues to produce its own domestic light sweet crude, the demand on Canadian light sweet crude will feel pressure, as will the demand for Canadian synthetic crude, synthetic crude being a complement or often a substitute for the light sweet crude, depending on the refinery output mix.
So there are some pressures on Canadian light crude. A fair bit of our—