This one I'm inclined not to oppose. I am sick to death of wiggers and their originators assaulting me and every other civilized person with their nig-nog noise. Their car is their space; they are free to play whatever they wish inside their car. But just as there are (legitimate, in my opinion) noise ordinances that make it unlawful for your neighbor to blast his ghetto rap so loudly it crosses into your property and intrudes upon your peace and quiet, so it should likewise be illegal for some inconsiderate asshole to force you to endure his loathsome rap crap (or whatever) while you are stuck next to him at a traffic light.
I have literally had to force myself to not become violent on several occasions. Blasting music (especially this godawful nig-noise called rap, with its relentless droning bass thump thump thump that you can often physically feel inside your car, even with the windows rolled up) is a form of assault, in my opinion.
If people were civil and behaved with even basic decency this sort of law would not be necessary. But with wigger culture run amok, it is now necessary to have laws to deal with things that in a former, better time, people (in the main) just didn't do ... because they weren't wiggers or other forms of bipedal animal.