Thats why catalyctic converters exist to reduce toxic pollutants though it will not reduce CO2 emissions.

“Rather than pushing for policies to reduce carbon emissions, ExxonMobil, under the tutelage of Tillerson and his predecessors, gave over $3.6 million to the American Enterprise Institute from 1998 to 2012, an organization that has helped distort facts about climate change and undermine public confidence in the impact…