If I remember correctly, seat belts were available as optional equipment in some American cars going back to the 50s, maybe further.
For its 1956 models, Ford offered an optional safety package called "Lifeguard Design"
which included front and rear lap belts.
Yeah, I remember those. But the topic of this thread is Politically Incorrect stuff we remember from childhood, not mere nostalgia. Besides, I thought Space Food Sticks tasted like stale, de-flavorized Tootsie Rolls.