First we need the high quality GPS map of the planet.
It should be wiki-style map, because it is impossible to map the world from an office.
When there is the map, we could start thinking of using it for navigation, including automatic or semiautomatic navigation.
The wiki style map www.openstreetmap.org has got more than a million editors already. What is needed yet is the HD international telescope project on the surface of the moon, which provides GPL quality aerial images of Earth for mapping.
www.openstreetmap.org is using now images provided to the OSM community by "Bing" (thank you "Microsoft" for this) and numerous government aerial images for certain regions of the planet. But the more comprehensive aerial imaging system is required.
To learn more of the GPS mapping of the world join the conference "State of The Map US 2013" June 8 - 9 http://stateofthemap.us/
June 10, 2013 in San Fransisco.
Earl Nightingale wrote: "All you need is the plan, the road map, and the courage to press on to your destination."