Beat congestion? Take 10 large areas around the country. It could be MOD, royal, church or gov land for example. Plan out evolving modular cities, with predetermined changes of land use as it grows. Plan in public transport, local employment estates, local housing, local shops, links to other areas. Ban cars for internal journeys. At the moment we have people in town A working in B, people in B working in A - all in equivalent jobs. Incidentally, I have noticed that employers place zero importance on whether you live locally, so make them pay and they will soon hire people on a different rating system