Risky business, NyBoy.
I know, first it's poo-pooing the bison. Now, it's the jaundiced eye on car doors. Will it stop before we have fitted you with a GPS microchip and your every activity is monitored for safety?

. You know US cars of that era had enuf room for throwing down a picnic blanket behind the front seats. No seatbelts for another 40 years and kids played touch football in those cars while their parents drove cross country.
"I better not have to come back there!"
Imagine that you are standing inside and opening that reardoor at 55mph ... the air catches that door while you hold the door handle and
Wham!
Much safer style and I only had to wait until I was about that young fellow's age, the BMW Isetta.
Steve