Integration with views (exposed) filters

I don't know if this is even possible, but i think it might be.

Views filters are shown to the user:

Country - Countrycode - Admin name - City (etc etc)

(This could be themed as a dropdown with a typing field next to it)

1) when pressing search, the filter initiates a search towards geonames that returns a lat/lon for the selected place.
2) then views, based on these coordinates, searches through locations stored in the location table.

If this is implemented in a usable way, it would be just *awesome*!