Ever since release of "The Fast and the Furious," kids have been buying up old Honda Civics and hang all sorts of gaudy chrome wings and neon lights on them, then hanging out after dark in parking lots. They are known in some circles as 'ricers' because they are more interested in making their Asian cars LOOK fast, rather than modifying them so they actually GO fast.
Without photos, it's impossible to know for sure. However, it sounds to me like these kids were ricers.
I think in the current lingo its called "flexing". We used to call it crusing, but back then we had 400 horsepower, now they have 400 watts.
BLUE LIGHT SPECIALS?
Drink beer! - Study for test!
Smoke dope -Do a research paper!
Have sex!- Study Sex ed.
Exercising their right to peaceably assemble?
Tell me about it. When I was their age, the activities I was engaged in were considerably more fun than hanging out in a large parking lot.