This idea is presented as a contribution to sustainability. I can’t see how. I can’t help liking it, though. I loved the Archigram drawings and even Philip Reeves’ ‘Traction Cities’ – one of the last books that I read to my older son before he stopped being read to. But surely if it’s bad to drive a reasonably well-engineered and aerodynamic car up and down highways, then it’s insane to drive a suburban house. Or am I missing something?