>you can't compress away all the space currently used as roads You can however plant a lot of trees which would make a huge impact on the sustainability of cit

>you can't compress away all the space currently used as roads You can however plant a lot of trees which would make a huge impact on the sustainability of cities by regulating the heat/cold much better. Also if you look at old European cities you can pretty much compress away all the car space. Jan Gehl's "Life Between Buildings: Using Public Space"[0] is a fantastic read if you're into thinking about this sort of thing. [0] ISBN 978-87-7407-360-4