Gonzalo Duque

Hello
I'm new to this forum and I've got a question. I'm trying to locate a Honda demonstration cassette tape from the 1977 to 1980 time frame. These were placed in the new vehicles so buyers could play and "test" their cassette decks. This particular one was mainly music beds and some guy narrating, and the cassette shell is white. Does anyone know anything about these and where I may be able to find one?

Thanks!