A lifetime ago when I was young fit and foolish I was a fire and rescue marshal at Silverstone.
One day I was marshalling a club meeting on what was in those days the "Club" circuit and one of the races was the Citroen 2Cv cup. They sped off from the start finish straight, made it around Copse without major incident, built up a bit of speed through Maggotts, in those days the club circuit hung a right before Becketts and embarked on the club straight.
Now club straight was as long if not possibly longer than Hanger is to this day with a rise in the middle that meant me and my fellow marshals on the inside of Woodcote/Hanger Straight were greeted with the wonderous sight of 20+ Deux Chevaux's cresting the rise jostling for position like angry hornets; absolutely pedal to the metal with the window wound up.
They plunged into the 90 degree right hander at Woodcote in a cacophony of squealing brakes and tyres with a fair amount of "Rubbin'" going on. Next thing we know the leading group closely followed by a few of the mid fielders fell over and rolled across the track ending up in the catch fencing on the outside of Woodcote in various stages of total destruction. We laughed a great deal as it was the outside crew's job to deal with the carnage. They only just managed to get everyone extricated by the time the some what reduced pack arrive back for another go on lap 2..... More screeching and complaining of tyres and several more joined the growing Citroen scrap yard at Woodcote.
By the time the Clerk of the Course threw a red flag on IIRC lap 4 there were only 3 or 4 cars left running!
The problem was that the series rules like many of the era stated that the cars had to run on standard road tyres and wheels and all the lateral loading combined with the yaw, pitch and especially the roll had simply rolled the tyres off the rims creating an instant deflation and rolling trip to the scene of the accident.
Probably one of the funniest things I ever saw on circuit.