This Tesla Model 3 now has its Halloween 'costume' ready. It's complete with a hood stack that rolls coal. Wait, what? You have to see it to believe it.

Listen Now 4min 39sec Share: Business Wire Exhaust from a diesel truck on April 20, 2018. In 2017, then-Governor John Hickenlooper signed into law a bill penalizing coal rollers.

Rolling coal is a term used when diesel-truck drivers modify the emissions controls on their vehicles to intentionally blow smoke. The practice is illegal in some states but not in Texas.

"Rolling coal" — when drivers blow thick exhaust clouds from the tailpipe of a truck — may be obnoxious, but it isn't illegal in most US states.

We shouldn't have to explain why the Tri-Five family is an all-time American great. It's got timeless classic looks, optimal dimensions for summer-time daily driving, and enough engine bay space ...

A new system that provides continuous information about the exhaust particles produced during combustion can help scientists design acceptable ways of generating electricity from coal, researchers … ...