That works for CO2, because there is no technology to mitigate CO2 release from combustion. But that isn't the case for particulate matter, carbon monoxide, or

That works for CO2, because there is no technology to mitigate CO2 release from combustion. But that isn't the case for particulate matter, carbon monoxide, or nitrogen oxides. You can't put a NOx tax on diesel because the amount of NOx you produce from burning a given quantity of diesel will vary by two orders of magnitude depending on the pollution controls.