EIA - Short Term Energy Outlook
Here are some data and forecasts. Read the paragraphs not just the graphs and you'll note that any one of a number of factors could throw all bets off, although the prediction through 2006 is for a continued rise in prices. Note that when adjusted for inflation, $2.75 per gallon gas is still cheaper than 1981 gas. A lot will depend on what the Chinese economy does. Pumping in the Middle East is already at historic highs and can not be increased, so demand will drive price.
And don't forget, to paraphrase a WW II poster, and Bill Maher, when you drive an SUV or alone, you are helping to support terrorism.