Today is National 8 Track Tape Day! These were being phased out when I was a boy but I remember them. If you've only heard about them or need a refresher here you go. My favorite part of 8 Tracks was the big unexpected "clunk" sound when it switched "tracks". Sometimes it would even be in the middle of the song it it would scare the heck out of you. Go to about 4:10 of the second video to find out more about that on a Michael Jackson 8 Track.
Here is one of our radio friends who knows a bit more about them than I do.
If you wanted to be on the cutting edge back then you could by a converter that would go into your 8 track player so you could play your cassette tapes Now there is an improvement...I think