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.
I grew up in a family of 5, albeit a decade after my siblings.
When I visited London with my parents, we went by train. When I was in the cub scouts, one of my memories was a group trip by train. When I went to middle school (years 4-6), it was easy enough for me to walk alone at the end, though mum did go with me at the start; when I went to secondary school (7-11) there was a bus, though eventually I found I liked the (3 mile!) walk.
Today, I find that my local bus route within Berlin to a nearby mall takes me past 2 schools, and at certain times of day the bus will fill with kids and adult supervisors. Sometimes I see people taking Kinderwagen on the bus.
This argument does not work when society is build towards roads and using them. I live in the Netherlands in a village, and not using a car is impossible with a few kids. The city is different.
