You can't compare landmass versus landmass but only the behaviour of people in different places. It makes no difference if you live in a big city in China or in

You can't compare landmass versus landmass but only the behaviour of people in different places. It makes no difference if you live in a big city in China or in the middle of nowhere in the US on how big a polluter you are when driving your car. The same car is the same car everywhere. It is the same earth we are all on and we share the same air so how much uninhabited land there are is completely irrelevant. Borders doesn't contain pollution. So yes, driving a big SUV is most definitely a sign of not caring about pollution and not "but X is different than Y". Even those who "need a big 4x4" mostly don't. A small 4x4 is often way better in terrain while polluting less.