Some truck owners are steaming mad over President Barack Obama and EPA regulations.

Some of these so-called “coal rollers” are making a political statement, thumbing their noses at the Obama administration’s effort to lower carbon emissions. Others are generally flipping off environmentalists.

These drivers are modifying their diesel trucks by installing a smoke stack to create bursts of black smoke.

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The EPA says that this is not only illegal; it’s unhealthy.

“Tampering with vehicle pollution controls is against the law,” the EPA told Fox News. “Tailpipe pollution, uncontrolled by emissions reduction technology, contains high levels of soot and smog forming chemicals, which are linked to premature death.”

Watch Trace Gallagher’s report above.

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