> I haven't found cars specifically in your links and I doubt that private cars are one of the biggest pollutants. If you click the second link there will be t

> I haven't found cars specifically in your links and I doubt that private cars are one of the biggest pollutants. If you click the second link there will be two large pie charts on your screen. The first shows total US greenhouse gas emissions by sector, in which Transportation is 29% and Agriculture is 9% The second shows a breakdown of Transportation by vehicle type. The largest part of which, at 59%, is "light duty vehicles", which is the term for everything from a moped to a pickup truck. 59% of 29% is about 17%, vs agriculture's 9%. Making cars roughly twice as "bad" as farming from a greenhouse gas perspective.