Petroleum prices and the prices of distillates such as gas have risen in the
states due to desperately low natural gas inventories. When one energy
market gets expensive, it tends to effect the price of other energy
commodities. Fed Chairman Greenspan has pointed to the natural gas situation
as a potential pitfall in economic recovery.
Another reason why gas is so expensive right now is simply that the price of
crude on the open market has reflected the uncertainty of the political
situations in the various OPEC countries. Anyhow, the price of gas could
certainly be higher. I wouldn't call the prices we're seeing here in the
Pacific Northwest unreasonable, though I'm sure that SUV drivers are pining
for the 'good ol' days'.