Below an example of what can be done with Geo Mapping and reverse geo coding.
We have in depth knowledge of and experience in customizing - Google Maps,Google earth, Multimap, MapQuest 

We use KML Programming , the XML language for Google Geo applications such as Google Maps and Google Earth.

We used third party Geo services such as: http://www.nacgeo.com/

Reference clients: Fleetronic.net, FunAbroad.com