> car seats.. nah
Crap no. Hell, seat belts weren't even required. That big Oldsmobile (bench seats, remember those?) had a metal dashboard with a big, round, metal clock in the center. My mom used to tease that I had a permanent imprint of that clock in my forehead because I hit it so many times as a toddler --every time dad hit the brakes.
>car seat
Mom did find some sort of baby chair that clipped over the back of the seat. No padding. No belts. Just a hard seat with a metal bar across the front --sorta like a booster seat, except it hung on the back of a bench seat.