egafd.com

In order to assist other motorists in identifying potentially dangerous
drivers, it's now compulsory for anyone with a lower than average driving
ability to display a warning flag (comprising of a red cross
on a white background) attached to the top of at least one door of their
vehicle. For drivers of exceptionally low ability, additional flags are
required.

Usually on white vans I've noticed. There's a link forming here.

.....and curiously, they all seem to have missed the part in the Highway Code about indicating, when about to turn.

Missing links, all right

)

Although I imagine cavemen probably had beter hygiene........

and suffering from early hair loss.

Mart