The game speed one is easy:
(game_speed #)
The number represents how fast/slow you want thegame to go, 1 is normal speed.
For scaling (not sure about this one):
(object_set_scale *object name* *#* *#*)
The first number is to say how much you want to scale the object by, 1 is the normal size. The second number is how long you want the scaling to take, I think 30 is 1 second.
For ai go to:
(ai_go_to_vehicle *ai* *vehicle* *seat*)
AI is the name of the encounter/swuad you want to go to the vehicle. The vehicle is the vehicle name. The seat is the name of the seat, like "W-passenger". The seat name has to be in quotes.
As for the tags, which AI were you specifically asking for? (Not saying I'll get them, just saying you should be more specific.)