"Road Train" or a semi-automatic powered train to drive the car with the driver in front of car. With the development of the transport system and infrastructure that allows the car without the driver to work more efficiently.
"Road Train" or semi-automatic drive train to drive the car with the driver's vehicle facing the development of transport infrastructure that will allow unmanned vehicles run more efficiently.
"Road Train" or train powered semi-automatic to follow the car with the driver in front end. the infrastructure development of the transportation systems that allow the car without driver can work effectively .