> No the most eco (and financially) friendly model is high density areas where you can walk and bike to school and work

No, it's not. Because for that to work, you'll need a large underclass that has to waste 2-3 hours a day in commutes and subsist on groceries from state-run stores.

But yeah, the elites will be able to live in nice walkable areas. I know, I lived in an apartment overlooking the Union Square in Manhattan.