Seatbelts: You know it makes sense

[easportsbig899]

This is a series of 4.They are all on my channel.

[Woollylinnet]

I don't know the date, but I'd say it was late 1960s. First, it's in B&W, and secondly, it wasn't graphic enough; by the 1970s people were seen travelling through the windscreen.

[piflover]

Thank you. Description edited.