1.
- crafts occupy a hangar even in flight
- I don't see an easy way UI-wise how to select the two craft which should swap places (I didn't think too much about it, but nothing pops up immediately)
- once hangar types are implemented, this would become even more pain in the ass
2.
- cars are already heavily abstracted
- they fly over oceans (public transport), have unlimited range (car rental, gas stations)
- I don't see why the agents couldn't live in a motel too
- and more importantly, I don't see any benefit in implementing this feature... if it bothers someone, give the car a limited range, they'll run out of fuel and will have to return home