“Foot operated radio station changer?
Ha! What decade?”
Early 60’s — we had two, an Olds Starfire convertible and a Buick 225 convertible (I drove Ms. America 1974 in it in the ‘77 Ms. Oregon Parade) it had a mirror to see the speedometer...you could change the angle of the mirror if you were short or tall (the actual speedometer was parallel to the earth) it was sorta clever.
A triple option tailgate with dual facing rear seats in the big family wagons...
We had a ‘59 Chevy that did not need a key - you just turned the knob that had a slot for the key (with the key in the slot the knob could be turned clockwise enough to lock it).
Automatic high-beams actuated by a small receiver on the dash or driver side fender top (NEVER worked well).
Crank starter...
AM radio with a front to back speaker fader...
Remote control outside mirrors controlled via a mechanical linkage...
Here’s that mirrored speedometer in a 1960 Buick:
https://youtu.be/4_HEDwu6tPs?si=VW0_6pr7sjdYJxoJ&t=1108
I drove Ms. America 1974 in it in the ‘77 Ms. Oregon Parade
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Ha ha—some things you never forget!