Yeah no one will bother with such a low-powered device. I used an in-car bluetooth-to-FM tranmitter bought from Amazon India for years. They've been sold openly since forever. Like this one: https://www.amazon.in/Portronics-AUTO-10-Bluetooth-Car/dp/B0...
Ha ha, I must have pulled up along side you the other day.
Just kidding, I'm in the U.S. But more than a few times I have suddenly got Mexican musical content on my radio in the car when passing close to another car.
I love these things, it's so simple and it's often a better UX than any car bluetooth provides. You also used to be able to buy aux adapters that went in your cassette deck!
