public class MainProgram
{
    /**
     * @param args
     */
    public static void main(String[] args)
    {
        Driver theDriver = new Driver("Troy McClure");
        Car car1 = new Car("Gas Guzzler");
        Car car2 = new Car("Electric");

        theDriver.setCar(car1);

        theDriver.print();
        car1.print();
        car2.print();

//        theDriver.setCar(null);
//
//        System.out.println();
//        theDriver.print();
//        car1.print();
//        car2.print();

        car2.setDriver(theDriver);

        System.out.println();
        theDriver.print();
        car1.print();
        car2.print();

    }

}