Neo4j Spatial – GIS for the rest of us by Peter Neubauer.
Impressive demonstration of the power of Neo4j!
Watch the slide deck and then see: Neo4j Spatial for more details.
And then, Neo4j Spatial Blog Ideas.
Now couple the idea of merging other data sources, say for example traffic, fire, or other public reports, current or historical onto a map. The potential to create or possibly prevent disruption of services seems unlimited.