I followed a van to work today that said on it's rear panel (twice!) "This vehicle may stop suddenly"
a) Isn't that true of all vehicles, that's why we have the 2 second rule (remember, Only A Fool Breaks The Two Second Rule!)?
b) It seemed to be a charity van, why on earth was it expected to stop suddenly often enough to be worth mentioning?
Answers on a postcard (FOR YOUNGER READERS, THIS WAS A THING YOU SENT WHEN ON HOLIDAY WITH A PICTURE ON ONE SIDE AND A BLANK SPACE YOU COULD WRITE A MESSAGE ON THAT EVERYONE WHO HANDLED IT COULD READ [though as I understand it the 'postcards' meant by the phrase above were blank on both sides])!