pm#car_with_a_certain_energy_source
  supertype:  car__auto__automobile__machine__motorcar  4-wheeled motor vehicle; usually propelled by an internal combustion engine; "he needs a car to get to work"
  subtype:  electric_car__electric_automobile__electric  a car that is powered by electricity
  subtype:  car_with_diesel
  subtype:  car_with_super_petrol
  subtype:  car_with_unleaded_petrol
  subtype:  car_with_leaded_petrol
  subtype:  gas_powered_car__gaspoweredcar
     subtype:  Stanley_Steamer  (trademark) a steam-powered automobile

1 statement is about a direct instance of car_with_a_certain_energy_source: graph1_on_car
No  statement uses a specialization of car_with_a_certain_energy_source; click here to add a statement.