Think again. Take a look at this: http://www.bbc.co.uk/news/magazine-20310752
400 billion barrels of oil - 400 BILLION!... and there's MORE!
We are addicted, so we are going to burn that stuff like there's no tomorrow. Well, there might not be much of a tomorrow for our grand children if we carry on the way we are doing. They will just have to burn the trees to keep warm and power they new-fangled steam engine cars. At least they will not have to pander to those odd environmentalists and their weird ideas... we will have already trashed the environment beyond repair.