All the times we have been there, the runway has been partitioned off with tyres in the last 3-400m where they have stored cars, so we have been limited on space. If the 9ff car hit the banking at the end, that sounds like they moved all the cars for this event and gave them the full length (oh er )?

Check this video for what I mean (see 1min) (although the cars have all disappeared):
http://www.youtube.com/watch?v=QHWWQ_poCGg

Unless the 9ff car went through the tyres out of control .