I've had time to think about this and I don't think it would be healthy for the games interactions.
Folks already autopilot enough with what they can remember. This would increase the number of autopiloting players and decrease RP.
Instead, lets do two things:
flying and driving by visual references ($landmark objects) - fly or drive to something you can see by describing it - fly to kashflo, drive to encampment
stop lights at intersections in the city - crossing a street against the light, you might get hit by a vehicle like happens in other places right now. Driving would be stopped at a red light like traffic in the tubes now.