I drive cars so old they all still have tape decks. I bought this fake cassette tape with a headphone style plug that comes of it. You put the tape in the player just like it was a cassette and plug the jack into your phone and it uses the car’s speaker system as an external speaker for the phone. I was so skeptical of it working because it was all of $5 and I’ve been using it at least 10 years and it works perfectly and beautifully. Plus bonus side-eye every time I pull it out to use it with someone new in the car.