Driveby is a totally different than parking for 1/2 hour with the 'music' blaring. There's actually some rule about how long they can run it, but one guy in particualr is deaf, and to top it off his truck's generator is loud and stinks. Sometimes I'll walk down and motion to him, and he turns the speaker off. Another neighbor spoke with him a couple years ago - and that made it easier to deal with him. A woman's touch is often more effective than the angry guy confrontation thing. ;)