Does anyone know if there is a website that will list the gas prices for all the states (and possibly cities) and cities in foreign countries?
The Department of Energy website provides an extensive array of data related to petroleum supplies, production, prices, etc. They don't have retail pricing data specific to every state or city, but they do have it for some states and cities here.
Only for North America, but try -> GasBuddy.com - Find Low Gas Prices in the USA and Canada
Definately need retail prices! Thank you though!