I “rolled coal” just once, and quite by accident.
But it was well deserved.
Took our then-TV up Going to the Sun Road in Glacier NP. It was a 2005 Jeep Liberty diesel. That road is always nearly bumper to bumper and 20-30 mph, very crowded. Reached the peak, looked around, hiked, etc. Then started the drive back to camp. That road is fairly steep, something like 25 miles worth, and coasting in gear all the way with frequent braking and never touching the go-pedal in 50 degree weather resulted in a stone cold engine when we hit bottom. The entire way down, this jerk road my bumper. Most of the way,I couldn’t see his grill, he stayed that close. You know the guy, I’m sure.
So we get to the bottom where a little throttle is in order, and the entire world behind me vanished in a huge black cloud. Mr. Tailgate didn’t emerge from the cloud for a long time. While it was viscerally satisfying, I certainly would not have done such a thing on purpose. Way too much chance he’d have an accident, but fortunately the guy behind him wasn’t so much of a jerk.