Oh yes, I remember those very well. Initially invented and made by the Lear Corp, the jet airplane folks. They worked, but were wierd in how they worked, the tape was in a single spool, it was drawn out from the center over a bar and into the playback head, and then taken up on the outside of the spool. A real pain if they ever came undone. And yes, I have rewound a few.johnmay said:You should find out how many out there remember an 8 track player. I had one hung under the dash on my 73 GT back in around 74. Worked great!