Many years ago when I was travelling the M56 a lot I would regularly see cars, normally dark blue VW Polo's, with a rectangular shaped piece of wood or plastic attached to the roof bars(1ft high x 3ft wide). This attachment was placed face-on seemingly to provide most wind-resistance. The drivers would have stop watches hung from their driving mirrors.
These cars would always be driving very sedately at around 60.
A couple of years ago I saw another one, this time it was a newer Polo, stopwatch hanging from the mirror, piece of wood on roof.
Does anybody know what they are/were?
PS
