My guess is that they have made this into a fun way to get us to send them maps data. We are giving them route data in places that street-view cars cannot acces

My guess is that they have made this into a fun way to get us to send them maps data. We are giving them route data in places that street-view cars cannot access. Players can also submit new portals with geotagged photos, which could help maps/street view/Field Trip/places. Indoor mapping of public buildings might benefit as well. They might also be able to use XM (energy orbs placed around town) to lure players to areas that need mapping info.