polymorphism : different forms

Dart Polymorphism

void main(){
 Car normal = Car();
 print(normal.numberOfSeat);
 normal.drive();
  
 ElectricCar myTesla = ElectricCar();
  myTesla.drive();
  myTesla.recharge();
  
  LevitatingCar glide = LevitatingCar();
  glide.drive();
  
  SelfDriving self = SelfDriving('1 Hacker Way');
  self.drive();
}

class Car{
  int numberOfSeat = 5;
  void drive(){
    print('Wheels turn.');
  }
}

class ElectricCar extends Car{
  int batteryLevel = 100;
  void recharge(){
    batteryLevel = 100;
  }
  

}

 class LevitatingCar extends Car{
   //polymorphism
  @override
   void drive(){
     print('Glide forward.');
   }
 }

class SelfDriving extends Car{
  String destination;
  
  SelfDriving(String userSetDestination){
    destination = userSetDestination;
    
  }
  //polymorphism: inherit and change
   @override
   void drive(){
     super.drive();
     print('sterring towards $destination');
   }
}