Crude oil is near it's 10 year low right now, I'd buy it!
Know that crude oil should always increase in the long term as long as two truths exist: 1) The world needs to use oil, and 2) Oil continues to be considered a finite resource.
I think you have a solid play here.
I agree that the world needs to use oil, I also think that they massively over-play the imporved efficiency of the west, it is minor!
I don't agree quite as much with the finite resource part, I mean it is obviously finite, but I think at a certain price there is enough oil that can be found to keep the world going for the next few hundred years.
Oil sands, deep see drilling and fracking are all pretty expensive and ofter don't give the same quality of oil as the traditional stuff, but there are billions and billions of barrels out there that could be brought to the surface for $200 a barrel or more.
The graph posted in the thread is interesting, supply and demand are about as far separated as has often been the case, makes me think a correction will occur.