The rule is that after qualifying the car must get back to the pits and have a minimum of 1 litre of fuel in the car.
As we all know the car did not return to the pits, but was told to stop on track. RBR were called to the stewards to explain why the car was stopped on track. The stewards accepted the reason that the team gave and thus they did not get penalised for stopping out on track.
However, after that the technical delegates at the FIA found they could only extract 850ml of fuel from the car, which is not enough for a sample and therefore the car was excluded from qualifying.
I think they will make changes to the car, but nothing too radical. The car is often slow in speed traps because they rely on high corner speeds, thats just how they run it... lets be fair, its hardly slow is it ?
The problem Seb will have is that this is a single stop race and tyre degradation is very light, that makes it difficult because pretty much every car needs to be passed on track. He should get in to the top 10 fairly easily.
Back at the sharp end Lewis will be hoping for a decent start - not something he's had lately. If Webber gets a chance he will jump and chop. Not worried about Pastor, he will want a good result from this race and will not fly in to the first corner like a berk.
The Ferraris start well and Alonso will be hounding Kimi into T1 having passed Button. Alonso will get passed Kimi reasonably easy and set off after the front three.
I can see a huge battle if Webber does get in front of Lewis.
Edit: No big deal to take the car out of Parc Ferme. I suspect the real reason is they wish to make setup changes. A "full investigation" as to why the remaining fuel (if it is in there) cannot be removed from the car is pointless, its a done deal - they can't appeal the disqualification now.