Rush said there is 700 years' worth of oil left

Great!

Where is it?

Either he is wrong, or else he is withholding it.

It cannot be the former.

"... there are also trillions of dollars of gold in the oceans. Just because a resource exists doesn't mean you can devise a cost-effective way to utilize it."
http://www.theoildrum.com/node/3969

Actually, I will go him one better: Why doesn't he collect all the sunlight that strikes the Earth for one year? That would run the entire planet for 7,500 years. Please do that. Thank you.