SET NEXT DESIRED MOVE STATE
|Number of parameters: 1|
This native actually need only for setting up move state when actor enters in vehicle (as usually in original .sco).
You must use it BEFORE TASK_ENTER_CAR_AS_PASSENGER.
TASK_ENTER_CAR_AS_PASSENGER(Actor, Vehicle, -1, 0);
It will make your actor enter as passenger in vehicle with move state 2 (normal walking)