I remember beater cars with bench seats, had a Mercury where the back wouldn’t stay up and I rigged it with an ice chest, no problems. But a few years ago I inherited a Ford from my aunt. Low mileage but it was mostly driven by her caretaker, who was 300 lbs or so. I don’t think she scooted-in all the way. And so the seat was worn in the center and on the door side, but not on the far side. So it forced me to sit a bit sideways.
I had back pain every day for 8 years and then one day my office hired a Corpsman who retired a couple of months earlier and just wanted to work to get out of the house. He saw me standing at the copier and says “you sit on your wallet, don’t you?” I thought it was an odd question because obviously everyone sits on their wallet, right?