Wired Magazine (June) had this great 1-page graphic comparing gas prices in about 35 countries. I had to turn it into a spreadsheet so I could sort it and chart it...
Maybe my father-in-law is right...maybe there are laws/regulations preventing us (in the US) from importing refined gas from other countries who could provide it much cheaper. In Venzuela, for example, gas costs $0.17 ! I could fill my tank for $3.40 !
Once I figured out how to calculate land distance from New York to Caracas, I discovered that it's almost worth it to drive to Caracas to fill up my tank ;)
The only problem is that it would cost somewhere near $715 to get there (at NY prices) to that I could spend only $44 to get back (at Caracas prices)... all this assuming it wouldn't impact my gas mileage to have a 250 gallon trailer pulled behind my car... (it would take 12 tank-fulls to get back home)