Nice. there's a selection bias as the people who play music loud enough to be heard from their cars and several genres there just don't overlap at all.
if we're acknowledging that the music played from cars is neighbourhood vibe, it raises the question of whether they are interfering with the neighbourhood as well.
I was waiting for someone to sneak in a anti-car angle into this and presto what have you ! Haha
Or blasted from a nearby apartment window, or cookout, or boombox on a bike, or bluetooth speaker carried by a walker, or....