Mercedes have put out a new advert featuring their car, which of itself it's interesting. However if you look at the front wheels the rims are of a different design and the driveshaft has been opened to allow air to be blown from the brake ducts out the middle of the rim, in much the same way as Ferrari are currently doing. Is this another leak of an upcoming development, as with the shorter nose which was featured in adverts before the parts were run on the car, or just the marketing dept getting it wrong?
![Image](http://i.imgur.com/isKK9HZ.jpg)