I'm glad the roads are small. Smaller roads cause slower driving (well researched). As for the cities, it is unsustainable to use cars as the primary mode of transportation within cities. We do want to make cities greener and largely car-free, because cars for individuals simply do not make any sense in a city. We still need roads for deliveries and occasional transportation of heavy or large goods, but transporting yourself within a city should rarely be done in a car. See Tokyo for an example of a large metropolis which functions well and which would completely break down if everybody tried to use a car to get somewhere.