why not...
You, sir, seem to be on a good point here.
Loud, bass heavy music is not environmentally controllable, hence it is an invasion of ones privacy when you are, say, at a stop light in heavy traffic. While it is NOT illegal to have an "excessive stereo," many groups, including law enforcement in some cities, have concluded that this is noise pollution and they have enacted laws to prevent you and I from causing undo damage to our hearing. --not to mention other medically claimed findings of other physical damage to your body.
Smoking in your car, at the same stoplight, you usually have a window down to prevent "Hotboxing" it. Your smoke freely pollutes the air around your vehicle, including offending my desire to breathe clean air. (or should I say CO2 (?) Laden) State officials have also recognized this form of pollution in public areas (restaurants for example) and make you, the smoker, go outside and stand in front of the door, which I have to inhale your smoke when I try and exit the building. I have not ever chosen to kill myself by inhaling tar, nicotine, and other TOXIC chemicals into my body. But you are forcing me to by partaking in your habit in areas I may populate.
While car audio and smoking can respectively be considered free will, what gives either party the right to disturb the others "Privacy."
we, as a society, have progressively lost respect for one another.
/soapboxing