An idea that sticks
It's featured in several advertising books.
Yet this is the first time I've seen it photographed in-situ like this.
I'd hazard a guess, based on the Ford Cortina, that it date from late 70s to early 80s.
Which make it 35 to 40 years old.
If this poster appeared today I guarantee people would be taking photos and sharing it on social media.
Because it is in my mind the greatest product demonstration ad ever made.