Ideas, Rule

I recently moved to London from New York and within the first 10 minutes I was under a big culture shock and trying to understanding this new place, accent, what is called what, and entire time comparing things with that of US.

For example: Rest room is referred as toilet, GPS is Sat Nav and so on.

I was wondering if there would have been an application which would create a mapping between the following:

Language: As mentioned above, tell me that GPS is in US, and Sat Nav in UK

Area: Wall Street in New York is same as Canary Wharf in London

Cost of living: 1 Starbucks coffee in NY is xxx$ and the same is yyy pounds in London and the same is xxxx Rs in Mumbai

Services: Cell phone for 1 year in US costs this many dollars while the mobile service will be so many pounds in UK

Shopping/ Brands: Circuit City in US while here they have Curry. I already have mapped several more stores/ brands/ services.

Well, I can put so many different things here. I mean there can be a visual mapping also on google maps in terms of geography. Anyways, I am not just restricting this to New York and London. Something like this should be available for entire globe. What do you guys think?