When traveling on the ground pulling coaster, it should be noted pull rope lashing points of the coaster to maintain balance and prevent deviation from the focus of the rim rubs wire.
In the ground pull flying car driving, should pay attention to the pull rope tie point to keep the flying car balance, to prevent deviation from the center of gravity so that the rim grinding wire.
When driving on the ground, pay attention to the binding point of the traction rope to keep the balance of the flying car and prevent the wheel rim from abrading the conductor due to deviation from the center of gravity.