ARW wrote

Can anyone guess who fitted them to the roof of my van?

We certainly know who didnt check them before driving off.

Actually it was not very funny.

I did, with the help of a bloke in a pickup with orange flashing lights on
the roof that stopped to help manage to get them off the motorway (they
were blocking lanes 2 and 3) throw them down the banking of the hard
shoulder, get the motorway running again and **** off before the police
arrived.