I am reminded of this adage, Man proposes, God disposes, after reading this morning about an enormous cock up in Sydney with traffic planning. $3.9 billion has been spent on a new tunnel system approaching Sydney Harbour Bridge and Circular Key. The project was opened last week with a great, self congratulatory claim about how this wonderful asset was going to result in a fantastic improvement in traffic flow. Instead it has led to impossible traffic jams and one person stating their 15…