Flying around downtown Detroit in a Bell-47.
Learning the layout.
Chasing the People Mover train through downtown.
(EZDOK made it a bit tricky to fly with their ground effects and crosswind gust modeling between the buildings).
It's difficult to see here, but there are labels everywhere on this photogrammetry map from Google.
I think this tech will become the next evolution in maps and virtual travel.
Users will be able to virtually fly through a route to see everything beforehand.