What can we do about it?

Straight up honest truth is, nothing... There is not a stinkin' thing you can do about it. We will run out no matter what we do to conserve it. the thing we can do is be prepared for when we do run out. A good way to prepare would be to invest in 100% electric cars. "Why can't i buy hybrids instead? aren't they cheaper" you can and yes they are, but when oil disappears so do the hybrids.