We Will Never Run Out of Oil
The Oil Supply - The Doomsday Scenarios are Flawed
http://economics.about.com/cs/macroeconomics/a/run_out_of_oil.htm
But maybe we don’t need to worry about oil if we just use hemp:
Is industrial hemp the ultimate energy crop?
http://theconversation.com/is-industrial-hemp-the-ultimate-energy-crop-20707
We Will Never Run Out of Oil
The Oil Supply - The Doomsday Scenarios are Flawed
http://economics.about.com/cs/macroeconomics/a/run_out_of_oil.htm
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Did you read that article? It talks about rising prices leading to using less and less. And using more alternatives in place of oil.