public class DeLorean implements Car {

    @Override
    public void startEngine() {
        // start engine...
    }

    @Override
    public void accelerate() {
        // accelerate...
    }

    @Override
    public void backToThePast() {
        // back to the past...
    }

    @Override
    public void backToTheFuture() {
        // back to the future...
    }
}