The first Australian city to go car free will gain a huge competitive advantage. Melbourne should not be looking for a single iconic building to win fame. Its whole central grid of streets and lanes is its icon.Read the entire article at theage.com.au.
Melbourne's civic spine is Swanston Street: it connects two great universities, the State Library, Melbourne Central Station, the main shopping precinct, the Town Hall, St Paul's Cathedral, Federation Square, Flinders Street Station, the Yarra and the Arts Centre. Change must start with Swanston Street.
The first stage should be to close Swanston Street to all traffic except trams (and bikes), remove kerbs, repave the whole area so that it can be seen as a pedestrian precinct, and allow vehicle access for delivery only between 8pm and 8am.
The car parks must be closed. The land is too valuable to waste on car parking.