In a "Hot Button Topic" on ESPN, they debated where the next likely NFL expansion city would be. The two cities being discussed are Mexico City and London, with the caveat of course being, after Los Angeles gets their franchse. For arguments sake however, the obvvious geographical choice would be Mexico City. Financially, London would be attractive for many reasons, even with the nightmare travel scenarios it would cause for west coast teams. I think the earning potential that London presents outweighs the travel difficulties. Mexico City is the natural choice, I just don't think it's financially prudent. London gets you into more time zones, and that as they say, is everything.