#vehicle_fleet__vehiclefleet__fleet  group of motor vehicles operating together under the same ownership
  supertype:  aggregation__collection__accumulation__assemblage  several things grouped together
  subtype:  motor_pool  a fleet of military vehicles controlled by a single agency and available for use as needed
  member:  taxi  autobus
  part of:  bus_line__busline  an organization responsible for operating a bus transportation system

No statement uses or specializes vehicle_fleet; click here to add one.