Fascinating such a product exists.
I would hope that the direction for the engine pretty much enables such a thing by default, and by default I mean just import a model, maybe detail the cities a bit more from the already imported accurate streetlayout and city generated from openmaps data (right?....riiiiiiiiiight?
![Huh? ???](http://forum.outerra.com/Smileys/default/huh.gif)
), and if you want through a bit of scripting set some goals/missions etc.
At least that's my hope.