John TomasicJohn TomasicApril 19, 20175min77

Colorado lawmakers are inching toward outlawing “coal rolling,” the practice of adjusting the workings of a diesel truck in order to let loose at will clouds of unfiltered exhaust as a form of cultural protest in an age of electric cars and climate change. The state Senate voted on Wednesday to pass a revised version of a bill that would make rolling coal a traffic infraction and subject drivers to a $100 fine.