Harnessing social proof in ads

Many years ago, the Ford Motor Company wanted to tell American motorists that they sold more convertibles than did any other automobile manufacturer. They could perfectly well have said: ‘America’s bestselling convertible.’ Instead they ran a headline that read: ‘The only convertible that outsells Ford.’ And the picture was of a baby-carriage. That is a kind of humour; and it’s almost a joke. It certainly depends entirely on a contribution from its audience for the communication to be complete. But the contribution is a small and pleasurable one, well within the capacity of anyone in the market for a car. And what could have been a piece of self-congratulatory manufacturer’s so-whattery became engaging evidence of confident leadership. The point had been seen.