yes, after 9/11 a bunch of ppl were freaking out, there were lines at the gas station around here, although no serious price gouging -- like it would cause some shortage or something
Also, with regard to 9/11, there was a drop off in air travel, yes, but after the intial wave of stranded travelers made their way home, people were less likely to take car trips either. People wanted to stay at home with their famillies, and even went out less...less demand, lower prices. Prices have gone up a lot around Dallas, but there is a wide discrepancy based on where you go..for example one night two weeks ago I bought gas at Sam's for 99cents/gal, and the gas station by my house was charging $1.24 (Sam's is about 15 miles away).