Drive.java Rewritten with an Abstract Class and Methods

Drive.java

public class Drive {
  public abstract class GermanVehicles {
    private String cost = "high";
    protected String speedometer = "kilometers"
    public int maxSpeed = 280;
    public int currentSpeed;
  }
  public abstract class Safety extends GermanVehicles {
    public void speedWarning(); //abstract
    public void activateSpeedGovernor(int speed);
  } 
  public class MercedesBenz extends Safety {
    public void speedWarning() {
      System.out.println("The Benz is going too fast. Please slow down");
    }
    public void activateSpeedGovernor(int speed) {
      currentSpeed = maxSpeed - speed;
      System.out.println("Benz slowed down to " + currentSpeed);
    }
  }
  public static void main(String[] args) {
    MercedesBenz S550 = new MercedesBenz();
    
    while(1){
      if(currentSpeed==maxSpeed){
      S550.speedWarning();
      S550.activateSpeedGovernor(50);
      }
    }
    }
  }
}