Younguns here won't know what you are talking about:
But 8-tracks in somebody's /66 Chev were just about all the music we heard
apart from records played on dad's stereo,
or trebly and shrill ethereal 'motown' coming over transistor radios at the beach.
My buddy's first car had an 8-track,
which caused us to spend hours sitting in it, summer or winter.
That was when a box of 8-track cassettes took up as much room as your girlfriend did in the passenger-side.
By the way, look at the playlist in this photo above!