It's not clear exactly when everyday Model S owners will get their turn, but it's important to temper expectations. The technology isn't really a peek at a future dominated by self-driving cars... at least, not yet. You'll still need to flick the turn signal to pass cars (to indicate intent and absolve Tesla of liability), and the additions won't help much when you're stuck in city traffic. Think of this more as a step up from the lane and braking assists that you see on other cars. They'll eliminate more of the monotony of driving, but there's no point at which you can completely glaze over.