Off-the-shelf technologies to reduce global warming pollution

There is no shortage of technologies to cut global warming pollution from today’s cars, pickups, minivans and SUVs. Many automakers are already beginning to use these existing technologies in their new vehicles. Motor vehicles emit a number of global warming pollutants, including carbon dioxide (CO2), methane (CH4) and nitrous oxide (N20) from the tailpipe, and refrigerants from the air conditioning system (HFC-134a also called R-134a). Here are just some of the technical changes or additions that are available today to reduce those emissions. This is not an exhaustive list.