http://www.autosport.com/gallery/photo.php/id/13250086
New airbox design for Mercedes.
However, I'm curious as to how they did this. This year the chassis had to be homologated and the design submitted to the FIA to stay as is once it has passed the crash structure tests (Virgin had to request the FIA to update their chassis to actually accomodate the right sized fuel cell); the roll hoop is both part of the chassis and part of the crash structure as well.
Don't know if you saw this in the Friday press conference, Dave.
http://www.autosport.com/news/report.php/id/83403
Q. Ross, you had quite a lot, I think. Longer wheelbases, different chassis, all sorts of things.
Ross BRAWN: Well, the bodywork change looks fairly dramatic. It is an improvement of course. It is not a huge improvement. Most of the big improvements come from the wings and the underside of the car. But it is how we conceived the car at the beginning and we had a bit of work we still wanted to do before we introduced the car as you see it now, so we went conventional for the first four races. Now we have got the system we always planned. Like everyone there are modifications to the other key bits, wings, diffuser, brake ducts and we have changed the wheelbase in order to give us more range, more weight distribution, although this is a circuit where I don't think rearward weight distribution is so attractive but it will be something we will want to use in some of the future races.
(...)
Q. (Frederic Ferret – L'Equipe) Ross, can you explain to us why you have changed the engine cover and you have two holes to cool the engine instead of one?
RB: It's the airbox, the intake for the induction system for the engine. Normally there's just one hole. We've got two because we've got a central structure for the roll hoop. It was done to improve the potential of the rear wing, so the system we have on some circuits where you need the maximum potential of the rear wing then we think it's a better system. That was the reason.