You've got to be kidding!
This economy would sink like a stone without oil, and there's nothing on the horizon to replace it.
The answer to your question is, "it can't."
At one time....the smart people of the world said that putting men on the moon...was an impossible idea..fit only for dreamers.
At one time....the smart ones decided that a former "B" movie actor could NEVER make it in politics.
At one time...all the smart money was on the Soviet Empire lasting forever.
And now sinkspur....comes along and says that oil is the ONLY way.
Thanks...but I'll put my money on this Nation (but only if it really wants to) somehow figuring it out.
Thanks,
redrock