70 year old tractors? India is the largest manufacturer of tractors but you think they all use 70 year old tractors like as the standard? I feel like you don't really know what you are talking about or just using examples on the fly to make your point which doesnt make much sense. China and the US are the two biggest polluters in the world.

https://en.wikipedia.org/wiki/List_of_countries_by_carbon_di...