DC sums up things well
"Felipe Massa's crash in the second period was a very stark reminder that this is a dangerous sport, just as it says on the ticket.
It was shocking to see the 2008 championship runner-up plough his Ferrari into the tyre wall and then not to initially know what the outcome of his accident was.
All we could see was Massa slumped in the car, which is never a good sign. It took quite some time for the information to reach us in the paddock that he was OK.
Television replays showed that he had been struck on the left-hand side of his helmet by a piece of flying debris.
It looks to me that he was momentarily knocked out because he drifted to the inside of the track, which is not at all a natural racing line, and the point at which he starts to brake is at the top of the corner rather than later.
Luckily, the car did its bit and the tyre wall did its bit but coming just six days after the death of Henry Surtees, son of 1964 world champion John Surtees, who suffered a head injury during a Formula Two race at Brand's Hatch.
After Surtees's tragic death, the vulnerability of the open cockpit has been in the back of all the drivers' minds.
That is the essence of single-seater racing but it also reminds us of the risk the drivers face.
The strange qualifying session was compounded by the fact that in the closing minutes all the official timing screens went down.
The end result was that nobody knew who was on pole and the top 10 drivers got out of their cars and were swapping times to work out who had actually set the hot lap. "
Source -
http://news.bbc.co.uk/sport2/hi/motorsport/formula_one/8169012.stm