re: not so aero?
They do have a blimmin’ big engine though, and they weigh bugger all too + isn’t there a rule (just like in cycle racing) to stop them being too aero.
When it comes to aero advantage isn’t the right kind of ‘rough’ better than smooth – hence dimpled golf balls travel further than smooth ones…
That’s why I eat plenty of cake, in an effort to get dimpled legs and a world-beating aero advantage.