@Test
    public void testFacade() {
        Car facade1 = new Car();
        Car facade2 = new Car();
        assertEquals(facade1.getPosition(), facade2.getPosition());
        assertEquals(facade1.isDestroyed(), false);
        facade1.run();
        facade2.run();
        facade1.collide(facade2);
        assertEquals(facade1.isDestroyed(), true);
        assertEquals(facade1.getPosition(), facade2.getPosition());
        assertEquals(facade1.isDestroyed(), facade2.isDestroyed());
    }