>>126904892
If you take in to account that every personal car driver in the world has an AM/FM stereo built in to their car, you'll start to answer your own question. Plus, most people just use music as a background accompaniment. They don't intellectualize music like you and I.
Just think about your aunt or some random co-worker and try to ask yourself what their favorite music is. I'd bet they wouldn't even have an answer, or worse, it would be some ridiculous answer like Maroon 5 or Barry Mannilow.