class Vehicule
   int fuel
   void Vehicule()
    fuel = 100
   return
 /class

 class Voiture is Vehicule
   int passagers
   void Voiture()
    passagers = 3
    fuel = 50
   return
 /class

 class Buggy is Voiture
  void Buggy()
    passagers = 2
    fuel = 50
  return
/class

 Buggy daisy

 print daisy.passagers