#roadster__runabout__two-seater__twoseater  an open automobile having a front seat and a rumble seat
  exclusion:  station_wagon  convertible  hardtop  coupe  minicar  minivan  jeep  limousine  compact_car  subcompact_car  touring_car
  supertype:  car_with_a_special_shape (pm)
  part:  rumble_seat  a folding outside seat in the back of some early cars

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