I acknowledge all arguments for diesel vehicles being able to lay down smoke, but i mist also remind people that it is in some circles popular to tamper with the engine, so it for sure cough out a lot of black smoke, this horrible thing is caller " rolling coal "
And i am pretty sure it is illegal in all American states, even the states that are a little " my kind of crazy" which i will take any day over my birth country's kind of crazy.
I dont think a diesel engine have to smoke very much even at full load, if it was that way i am sure trucks ( 18-wheelers ) would be very unpopular on the road even if it is them that bring us just about everything we buy.
And shipping would be very bad with the super massive engines that burn a very cheap form of diesel.
Here trucks dont spew more than a nice diesel smell, which i like almost as much as the smell of fresh cut grass, you will on occasion hear a semi that have a modified exhaust and so are even louder / too loud, and that i dislike even if i do like the sound, but that level of noise should not have a home on public roads.
I am 100 % on board with wanting to be different, BUT ! you can not do that in a way where others have to pay / suffer for it, so color your hair pink and tattoo every inch of your body, and that is okay as i can look the other way, and even if i think you are a clown i will stand by you.
But be a obnoxious A-hole in / on a loud vehicle and i have to put my foot down cuz i can not close my ears or tune into the chirping birds only.