I'm not as ancient as you are, so never had inner tube car tires ;-)
As a teenager working part time in a gas station for a buck an hour I put lots of tubes in tubeless car tires when someone had a tire that wouldn't hold air if they didn't want to spring for a new tire. Also lots of cars still on the road weren't tubeless. Not sure if my first car had tubes or not (I forget after all these years).