RIP to Marco Simoncelli who died today in a horrific crash. His helmet was knocked off in the crash and died very soon afterwards. They did everything possible to save him but his head injuries were terrible. Our thoughts are with his family and his girlfriend who was at the track and watched the horror unfold. I feel for her. He was only 24 and had a great career ahead of him.
Here is a thread that explains it better. not for the faint hearted.
http://www.dailymail.co.uk/sport/othersports/article-2052436/Marco-Simoncelli-dead-Malaysian-MotoGP-crash.html