One of my first vehicles came with an aftermarket ten-disc cd-changer someone had installed in the back and hooked into the sound system, with a separate control panel up front. It was such a pain to use (and would skip constantly) that I usually just listened to the radio anyway.

And portable cd players were rated by how well the could handle movement, which basically meant many seconds they could hold in memory to prevent skips.

I still have and use that cassette adapter, but my car is from before 2000

Oh you never got that yellow sport one either?