alt Hacker News> Oh, sorry, that doesn't have a line item on the toll receipt, silly me.
Money is a pretty good proxy for CO2. So the carbon footprint of large cities is unsustainable.
The most eco-friendly model? Low-density semi-rural areas, with EV-based infrastructure, with sane-sized cars (not SUVs).
No the most eco (and financially) friendly model is high density areas where you can walk and bike to school and work. The transportation costs under this model are effectively nil.