When I was working at a BMW dealer the transporter arrived and the driver started to unload the cars. He forgot to extend one of the ramps on the lower deck got in the car put into reverse to unload and bang the car fell through the gap, not in it's entirety but caused damage. I could have stopped it happening at any point but chose to stand and watch.
Bit like this photo of builders installing bollards to stop nurses parking on the pavement outside the Royal Hospital in Belfast. They are clearing up at the end of the day and the look on their faces when they eventually realise they can’t get their van out to go home!
must admit I would be watching from a discreet distance so I could have a giggle without upsetting the poor chap