Against cars though I am.
But cleveRail will endeavour to build a city without level crossings. Main roads will pass over or under, and minor roads will simply stop. They will then either be renamed on one side, or, as in Goodwood, "Essex St Nth" and "Essex St Sth" will eventuate.
A city where the rail and road systems are completely independent of one another, and where, even at night, trains are actually faster than cars at moving you from A to B. That is my vision for Adelaide/Australia.