http://www.vox.com/2016/9/9/12843…

Vox is pretty hit or miss, but I think this article was interesting. Basically it talks about the socioeconomic group that likes rolling coal, and how they perceive their “rights” to do so, and any effort to ban it being “government overreach”.

Full disclosure, I think rolling coal for the purpose of annoying others is idiotic. If your diesel produces soot as a byproduct of a performance run (tractor pulls), so be it, but making your truck pump out black smoke to harass others is just dumb.