I'm always embarrassed to play music I like in my car when with other people
Why, what kind of music do you listen to?
Rammstein and AC/DC, and I love both.
It is known that the driver can decide what music to listen to. If they don't want to let you enjoy yourself then they can find another ride.
But I just like them so much, really.
If you like them that much, who cares what other people think. It is your car, you should just listen to the music that you enjoy.