Russell Shaw at ZDNet uncovers one of Google's patents covering mobile search. Great find Russell.
Search for a restaurant via portal, and then dial from one click, get a map, or use Google GPS for direction. Keywords, maps, GPS coordinates, use same results in a different location (mobile favorites)
It appears Google covers mobile search using a keyboard, voice and GPS coordinates to identify and direct a mobile user to relevant query. Your "find" query stays in a "loop" and Google is there to offer additional services, providing a true mobile portal.
The abstract:
A computer-implemented method is disclosed that includes receiving on a mobile device a search query associated with a geographic location, providing one or more search results in response to the search query, the search results each being associated with a geographic location, and presenting on a graphical display of the computing device icons corresponding to each search result and also corresponding to a key on the computing device.

To see Russell's very extensive review on this patent.