07.05.2015, 23:20
You don't need to. Nothing has to be streamed to anything to use AttachTrailerToVehicle. Hell, you don't even need to use a trailer ID, it can be any type / ID of vehicle(excluding a train, ofcourse, unless you're attaching another train?).
And yes, it automatically detects the proper angle for the vehicle.
And yes, it automatically detects the proper angle for the vehicle.