public class ModelX {
      int odometer = 0;
      boolean autopilot = false;

      public void drive( int miles) {
             System.out.println("car drove " + miles + " miles");
             odometer = odometer + miles;
}

      public void drive switchAutopilotOn() {
             autoPilot = true;
             System.out.println("Autopilot is switched on");
}

  public void drive switchAutopilotOff() {
             autoPilot = false;
             System.out.println("Autopilot is switched off");
  }
}