It wasn't until the 1980s that it became illegal to not wear a seatbelt in the front seat of car. However, accidents still happened and to stop people from taking risks while it was still legal, public information films extolled the virtues of the seatbelt with the message: "Clunk Click Every Trip". Here's (oh God) Jimmy Savile and others to demonstrate, particularly to you ladies watching.
For a little change of pace, I'll also give you this hardcore remix by Jam Hamster. It's very catchy.