Annoying sounds from cars at stop light

So these stupid drivers are only 6". I would postulate that the waves coming off the back directly towards the metal sheeting on the door get that resonating and perhaps at a much lower frequency then the driver is producing, remembering that larger more massive objects at a lower frequency. 

So now we have speaker the size of a car door pumping out bad bass. 

$1K cars with $3-4K stereos around here. All I hear is bunch of rattles and buzzy bass. Definitely annoying.

" So now we have speaker the size of a car door pumping out bad bass. "
There are more than likely, good size sub woofers in the trunk.

What is with the subs driven to total overload such that they are buzzing and vibrating? Perhaps the thicker skulls of their owners require a higher volume. Glad I don't have to put up with that racket.

My guess is that it is the vehicle that is vibrating due the large about of air being displaced by the subs. I have seen closed doors pulsating in and out with the beat of the music. It pretty much, eventually, turns ones car into a rattle bucket over time. Maybe they play it loud to cover up all the rattles, squeaks and other noises.