also, not sure if it helps at all, but while i was about 4 or 5 cars back from olds mark, i didnt hear or see anyone skidding, sliding, burnouts whatsoever, just good clean driving. James can attest to that im certain, but as soon as he pulled over, for reasons unknown, that is when things went wrong.
I was quite annoyed when police surrounded our gathering, and stared really having a look at cars, but now when i think back, and actually seriously think about some drivers actions, it does make sense why they came down and had a good look/defect. Again, the minority wreck it for the majority.