US government targets 'rolling coal' pick-ups – report

Companies offering products that enable diesel pick-ups to bypass emissions software – a phenomenon known as "rolling coal" due to the huge clouds of black smoke it creates – have come under scrutiny from the US government. Earlier this week, the government filed a US federal court complaint against American company EZ Lynk for selling an aftermarket emissions defeat device advertised as a diagnostics and data-logging tool, news outlet Reuters reports.

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