• The driver's sat-nav indicates that there is a road train ahead that is following some of his/her planned journey.
  • The driver approaches the road train, which is controlled by a professional driver at the front, and indicates that he/she wishes to join.
  • The road train takes control of the extra car, pulling it close to cut air drag and save about 20% in fuel consumption.
  • The drivers can relax until they wish to leave the road train, at which point they signal their intention to the driver at the front.
  • A bigger gap will be made to allow the car to leave and control of the vehicle will be returned to that driver.
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