If we run out of crude oil, what will the world become? We'll be entering the Second Iron Age, having come through a very brief period of high energy oil fuelled growth. Maybe the Steampunk visions will come to pass and most of our machines will be gears, pulleys and cables rather than silicon. Or maybe we'll start using wind, solar and wave power more. Our planes turn to zeppelins, our ships go back to sails or nuclear batteries and our cars become solar-electric-pedal powered multi-hybrids. I don't doubt we will survive, but the oil won't last forever and now it's become such a part of our lives that the transition to extreme high prices or no oil at all will be very difficult indeed.
Mokalus of Borg
PS - I did recently watch Crude.
PPS - It's possible rising prices will mean we run out less quickly.