public class Main {
    public static void main(String[] args) {
 
        Wrangler myWranglerCar = new Wrangler();
        myWranglerCar.drive( 100);
        myWranglerCar.takeOffDoors();
        System.out.println(myWranglerCar.returnCarModel());
        myWranglerCar.setProductionYear(2022);
        System.out.println(myWranglerCar.getProductionYear());
 
        ModelX myModelXCar = new ModelX();
        myModelXCar.drive( 90);
        myModelXCar.switchAutopilotOn();
        System.out.println(myModelXCar.returnCarModel());
        myModelXCar.setProductionYear(2021);
        System.out.println(myModelXCar.getProductionYear());
 
        Car myCar = new Car();
        myCar.drive(50);
        System.out.println(myCar.returnCarModel());
    }
}
/* Output:
Car drove 100 miles
Doors are taken off
Car model is Wrangler
2022
Car drove 90 miles
Autopilot is switched on
Car model is ModelX
2021
Car drove 50 miles
Car model is unknown
*/