the 1950s baby seats, that hung over the seat back, seem to also have been good for hanging the kid outside, over the door. Well, if the kid is dripping wet, or the car is boiling hot and not equipped with AC, why not?

https://www.reddit.com/r/interestingasfuck/comments/1d5yoty/the_1950s_baby_safety_seat_never_leave_your_child