Actually There were shortages as well as entire countries priced out of buying such as Uganda.There never was a shortage of oil in the market. Did you have to wait in line for gas? Did you hear about any real significant shortages world wide?
Spot shortages did occur in parts of Georgia and Tennessee.
Three very short points:
1) I work in the Energy sector as an Engineer and have for 30 years, The basic point is the RATE of discovery is markedly less than the RATE of increasing demand.
At some point this will become the RATE limiting factor of future global economic growth.
We haven't found a significant new major discovery after the north slope and the north sea, both now declining.
When you finally see shortages at the pump they will be essentially permanent.
This does not by any stretch mean we are OUT of oil, only we are unable to grow the supply.
2) The easy oil both in terms of access and quality is a declining resource. Sour Crude cost more both in BTU's and in Currency to process than sweet crude.
200 FT wells in the Saudi Desert are less costly (in BTU's and $'s) than deep water 10,000 FT wells.
The low hanging fruit is picked.
I designed seismic equipment in the 1980's, we have better and more numerous techniques to look for oil and gas yet find less (a lot less, factor of maybe 10 times less than 1950).
3) Generational effects are going to compound the problem (IMHO) because projects for substitutes,alternatives and new discoveries are not economic given the current financial crisis.
The last great depression had the US as the Largest oil supply on the planet at the time.
We are in much worst shape this time around, China also is now a large competitor along with Asia and now India.
The main thing saving the US is China grew to rapidly (overshot).
And BTW I am not either a social or market fundamentalist, none the less sometimes market fundamentals do explain things (not often, but it does happen).