My first experience with seat belts was in an airplane in the early 1960's. Dad was a fighter pilot in WWII; he also had his own business installing and/or repairing all of the electronics in planes. My oldest brother also had his pilot's license. My father and a buddy jointly bought a twin-engine, 8 passenger plane (Twin Beech, for those interested). They would take us flying and of course, everybody had to wear a seat belt. We associated seat belts with flying: SO COOL!
I remember my dad picking us up at school one day in his new car (1966/67?). When we got in, the first thing I noticed was it had seat belts, just like the plane! Buckled right up and have ever since. If I have a passenger, I will not even start the engine until they buckle up, as well.
This makes me laugh. We lived in a small, post-war house, no AC (in south Texas), very plain; my brothers slept on the back porch. In winter, Dad would put up plastic-framed window covers for them to sleep out there. There were five kids then and it was a two bedroom house. I wore my brothers' hand-me-down clothes (except for school, where I would wear the dresses my mother made). Our cars were always old beaters. My mother gardened and grew all our veggies, fruits, etc. We never went out. Yet we had an airplane and a cabin in the mountains for summer vacations. Priorities. Go figure.
Some day, I will tell you about The Duck. Now there's A Story!