Forgive me if I'm misunderstanding this but weren't the SUVs already calculated in the countries' bars? Of course something globally combined that burns fuel is going to be significant. I imagine sedans and coupes wouldn't be very far behind. This smacks of a "Statistically, everyone has one testicle" type of thing.
Are we just picking out things that we can add to the graph? Like, can I choose farts or barbques?