After a year and a bit, I have finally ended my experiment with Google Latitude.
All in all a very useful service. Unfortunately (as with most modern services online) not fully useful unless your mates also pitch in.
Still, I found it interesting. Some features are still beta, and it still (after a year) misidentifies my place of work as "out". With a bit of polish, it could be a killer app. As it was, the feature I used most was export to KML, which helped with those mileage estimates.
Maybe Google should consider G+ integration. Then, if your boss appears in your circles, he could schedule and move employees across a map. Distance workers and consulting firms come to mind.
For now, I have signed out, concluding an interesting yearlong experiment.