If only Milton Keynes had an underground system. Can't be that difficult to build one with all those broad grass verges alongside the boulevards. The map shows a simple network which could be developed. Existing traffic flows are well catered for including the ever popular Stony Straford - OU connection; late night revellers from Xscape could spend the rest of the night on the inner city Circle line. New travel patterns could emerge such as Central Station to Majestic Wine warehouse, or cbx to Woburn Golf Club.