In some areas OSM data is very complete and has a level of detail not seen in closed data sources. Another distinguishing factor is that it contains the knowledge of the people who live in that areas. For example, commonly, colleges are mapped with many details, because students spend special care mapping the place they study.
Taking into account these characteristics and others and the OSM licence, What's the most promising application of OpenStreetMap data?
-Car GPS may have OSM data?
-Government could make use of OSM data?
-Companies could make use of OSM data?