I was sufficiently filled with rage and hatred to call the cops. It took a bit for my addled brain and sleepy speech to be understood while I was standing near the bleeting car, but they took my information and I tried to go back to sleep.
The one thing that made me happier was that the fools parked their car in a red zone.
Also what do people think of giving out fix it tickets for car alarms that wont shut up, preferably ones that recommend switching to a silent car alarm? Would it be a reasonable demand that if someone actually gets reported to the cops for not having their alarm shut up they should have to replace it with a silent one?