Rolling coal (also spelled rollin' coal) is the practice of modifying a diesel engine to deliberately emit large amounts of black or gray diesel exhaust, containing soot and incompletely combusted fuel. Rolling coal is used as a form of anti-environmentalism protest.
Rolling coal (also spelled rollin' coal) is the practice of modifying a diesel engine to deliberately emit large amounts of black or gray diesel exhaust, containing soot and incompletely combusted fuel. Rolling coal is used as a form of anti-environmentalism protest.
Source: Wikipedia "Rolling coal" · CC BY-SA 4.0
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