I certainly wish they would do that here. And throw in boom-box cars, too.
Since this topic seems to be wandering, I'll throw in a related (hopefully amusing) tale...
We had a townhouse at the end of a row of townhouses, and just over the fence was a convenience store that was turning into a hangout for 3 or 4 cars with LOUD stereos, and they liked to compare volumes between the vehicles, and apparently the best time of day to do that was just after the store closed - around midnight...
To further exacerbate the problem, they did seem somewhat concerned about their hearing, and were wearing earplugs so as not to deafen themselves inside the vehicle, despite not worrying about the affects to anyone else's hearing (say in a 200 yard radius or so...) This just made it possible for them to turn up the volume way past the pain threshold inside (or even near) their vehicles.
One night I wandered over and pretended to admire the "noise" until close enough to be invited to lean into the window to "see" the equipment, at which time I pulled out a "canned-air horns" from a pocket. and shoved my arm into the car, where a couple "loud-stereo" owners were sitting, and pulled the trigger, emitting a >100 decibel blast. The occupants had removed their earplugs to be able to speak with me without resorting to anything so crass as shouting...
It didn't go over well... I was accused of attempting to deafen them, and castigated for showing no concern for their "aural" well-being.
(I was even threatened with physical violence - but being twice the size of any one of them, it was not a great worry of mine, and it was just bluster in any case. (Could have been worse, I guess, but I hadn't considered that... maybe stupid on my part...)
At this point, I mentioned that several of us in the development had been discussing possible solutions, and that this one had seemed at the time, to be the most pacifistic (and least likely to produce assault charges), and that to avoid any escalation, they might pick another location to demonstrate the abilities of their sound systems.
They did.
I still can't forget the looks on their faces as I held the horn inside their vehicle - it must've lasted 15 seconds or so before they overcame their shock and incredulity and pushed the horn away... To quote the credit card commercial, ...priceless...
Disclaimer : I won't normally suggest any sort of vigilante action, but with 2 toddlers in the house being woken up every other night for a couple weeks by these guys, and having the bylaw officer not showing up on any of several occasions, I was angry enough to implement this plan. Fortunately it worked.
Jamie