Lets not get used to them, they will soon be banned for being too clever (sorry, I mean to "cut costs") just like the double diffuser, Merc airbox (even if that hasnt gave an advantage, it looks different so its bad apparently!), and just about anything else, because lets face it all we need is adjustable rear wings and "KERS" programmed so it acts as a push to pass button (end sarcasm mode)