The cassette player in my old car had a cover that was also a display panel. It folded out, then you put the tape in and flipped the cover back so it locked, then you could play.

Got one of these adapters to plug in an iPod. Stuck it in, then went to close the panel. The wire got in the way so it couldn’t lock. No way to jam it without damaging the cable.

No return policy back then. It sat in the dashboard until the car died many years later.