The Nissan drive event also talked of giving over the charge spot to those most in need.
For instance, you come in nearly empty, and the other car already at the charge spot is 80% full and software says that it should be good enough to get them to any typical destination in their usual radius. So the charger disconnects them and tells the nearly empty car that they can take the charge spot. (Works if there is an empty space close enough to the charge cord.) Probably texts the owner of the first vehicle as the nearly empty one starts to get close and says "please move your vehicle since someone else needs the spot now."
It is easy to imagine all sorts of scenarios like that if all the data is available, including SOC of the vehicle, and how to contact the owner of the vehicle (assuming they permit being contacted for such things.)
It is hard to know just how sophisticated this will be next year, and the year after that. Nissan was talking about possibly far off scenarios as if they will be ready right away.
Another point from the Nissan test drive event was to emphasize that the GPS maps will auto update themselves wirelessly without having to get a new DVD from the dealer including to add new charge locations. That point alone seems to convince people that this is a good technology without going into some of the more complicated possibilities.