I think tar sands and shale oil buy us out of the "classic" peak oil scare, which was that we had used up 50% of the world's oil and were headed for production

I think tar sands and shale oil buy us out of the "classic" peak oil scare, which was that we had used up 50% of the world's oil and were headed for production decline. No, we've used up less than 30%... and can get much more, expensively and with massive cost to the environment. I don't think an oil shortage is in the works just yet, but the era of cheap oil is gone.