Yes, I'll make a very brief comment.
The talk around natural gas and the fear that we would run out of it as a fuel is associated with the fact that in a single molecule of natural gas, we move four hydrogen atoms. Nature connected them all up. What you want at the point of eventual use is the highest ratio of hydrogen atoms to carbon atoms in your fuel. And you can't get higher than four hydrogens to one carbon, which is methane.
So you should be using natural gas at final points of use rather than in big industrial processes, where everything is.... You can contain it, process it, and take out the carbon dioxide. When you have diverse uses, get the hydrogen as high as you can, hydrogen to carbon. That's the preferred use for natural gas.
You can make steam, you can make hydrogen, you can make all the heat you want with the coal in the tar sands. That was the whole point. We have a layer cake here, and we have to start thinking about looking at this in non-traditional ways. What is the best combination, and what are the technologies that allow us to do this?