Comment Capitalism (Score 1) 663
I'm sure this has been said before, but we probably won't come run out. It will just become increasingly expensive, until the point that other renewable energy becomes more attractive. As per the last 2 "oil ceilings" around $120 (one of many examples) WTI (or was it Brent? I can't remember), it would seem that currently energy prices for trucks, planes, and consumers can't support >$120 price.
So basically, this problem is going to solve itself, and we won't run out of oil, because we will (mostly) stop digging for it when it's too expensive, and use something else.
The only risk is that energy companies take the profits from oil and re-invest it in making cheaper drilling techniques instead of alternative energy, and then we really do run out before we can use oil to find an alternative (since most certainly any research is going to require it). But that's pretty unlikely, considering "oil" companies are already investing in alternative energy to become "energy" companies.