I can put a fog machine on any vehicle if I want it too do that. Currently the fluid is generally white, but I’m sure for a few $$$ they will make me a colored fluid with any color I want. Also I many offensive scents are an option as well (again, probably not available, but for $$$ you can get it) The people who like to “roll coal” are more than willing to spend the $$$ needed so there is likely a market if you want to go into that business.

Personally I consider my trucks for working hard not show. I won’t be doing this because my truck isn’t supposed to draw attention to itself - and with the antiques I’m towing it can’t complete anyway. (Trucks are also female so those hangers are wrong)