My mate Terry from the unit next to mine and his friend were extras in that film Rush for the scenes shot at Cadwell Park as part of a local classic car club as they wanted period cars in the background shots, whilst there they were asked if they wanted to be extras sat at trackside posing as fans waving programmes!
Spent about 3 or 4 days there filming all dressed up and in make up every morning by all accounts, not that he can even spot himself in the film

I'd have liked to have been there though, the cars were pretty special he tells me and had a team of mechanics on hand to fettle them..and were driven by some quick drivers, a great time had by all