#transmission_system__transmission  the gears that transmit power from an automobile engine via the driveshaft to the live axle
  supertype:  #gear_mechanism__gear  a mechanism for transmitting motion by gears for some specific purpose (as the steering gear of a vehicle)
  part:  #clutch.coupler  #fluid_drive  #gearbox
  part of:  #drive_line_system
  subtype:  #automatic_transmission__automatictransmission__automatic_drive__automaticdrive  a transmission that automatically changes the gears according to the speed of the car
  subtype:  #four-wheel_drive__4WD  a transmission that provides power directly to all four wheels of a motor vehicle
  subtype:  #standard_transmission__stick_shift__stickshift  a transmission that is operated manually with a gear lever and a clutch pedal

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