MAmornIS,
Since your in Addison/Lombard....
Try dropping by Hanover Park (Barrington and Irving Park).
Every Friday and Saturday night (around midnight) a lot of fixed up imports and domestics hang out there by McDonalds and/or Taco Bell. I personally don't really hang out there (they're mostly young punks (sorry) with nother better to do), but since it's literally 5 seconds away from my place, I always drive by there to check out other people's rides before I go home on a Friday or Saturday night. I like fast rides done up right regardless if they're imports or domestics.
Every week you'll find a bunch of serious 10 second domestics with slicks and all. You'll also get your regular dose of riced up imports as well. Last week there was a new yellow IS300 there as well. On a good night there's up to 50+ cars there.
Dunno what they do though... sit, show off, and talk smack about who's ride is bad or not?