Remember when pollution was really pollution? When poisonous hydrocarbons were the culprit? When CO2 was understood as a normal bi-product of all plant and animal life, and not considered a pollutant?
Here is an interesting test: In terms of real pollution, which pollutes more? Ford F-150 Raptor truck, the tiny Fiat 500, or a leaf blower? You might not be surprised that the leaf blower creates far more pollution than the two vehicles. But you might be surprised that the Ford Raptor Crew Cab pollutes less than the diminutive 2012 Fiat 500!
During part of the cycle, the Raptor was actually cleaning the air. That means that the exhaust coming from the tail pipe of the F-150 was cleaner than the air going into its intake manifold!
Put that up your tailpipe, enviro-wackos!