That's interesting Kappa! Are you (FSDT) still programming them using the AFCAD as a track/route of travel?
No, it's entirely done outside the AFCAD, we give the vehicles a start point and a set of waypoints/speeds to follow. However, they are real ground AI, not just animations so, they have a physic simulation and behaviour, which is done entirely by FSX, we haven't programmed anything regarding to when to stop/start in proximity of the user airplane, etc.
2. Also, can you get them to do pushback?
We'll be probably able to make them doing anything in the future...consider that the ground AIs is something that we had for a while, they are still not using anything of the capabilities of our new Python engine, which will expand considerably our control over simulation objects.