Not to mention that peculiarly British accessory known as the "random nut ejector." Every British sports car I owned in the 60s and 70s had one. You would come out every morning and there, lying on the car floor, would be a nut. Never obvious where it came from, and it had no apparent effect on the integirty of the car until the day when the whole thing simply collapsed in a great heap.
Look closely at the background of this still; a random nut is being ejected: