Yes, transport takes on board not only the people. It also carries cargos, and even picks up vehicles. Further details are in the next video.
Of course, not all of them. You cannot carry the MCV. But notice those propellers have been fixed. And the cargo keeps itself, and you can attach it to any model without modifying the model. It became possible after new physical movement model which I finally added to the game. Also helicopter works when playing over the network.