@TechConnectify I saw three 8-track players (Lear jet Stereo) ever, 1 in a car! They never caught on in UK & Ireland. It was only being standard in some USA cars that boosted them. The Compact Cassette was earlier (1962 - 1963) vs 1964 for the 8 track. The wear was excessive due to being an endless loop & thus no rewind and fast forward was slow and rare. Heads quickly went out of alignment. The Sanyo stereo cassette with LW/MW/VHF radio was very popular aftermarket install in the early 1970s.