A good idea in theory. However, a lot of the developments in SoA lack proper infrastructure - schools, shops etc., and little thought seems to be given to how local roads are affected (eg building the new football ground at Knights Lane, Tiddington & the Trinity Mead estate (although a new road has helped somewhat)).
Just found an article on the BBC websire (bless the Beeb!):
BBC NEWS | Have Your Say | 'Eco-town' plans: Your views