This is a fascinating idea, and I can only wonder if a big city can actually pull something like this off.
In San Francisco's Golden Gate Park, each Sunday brings the welcome silence of no cars on the main road - and the result is droves of people (maybe too many?) enjoy riding certain roads of the park without the nuisance and danger of cars. A similar measure to close the park's main roads on Saturday was recently vetoed by the lunatic mayor (he's generally a lunatic, not because of his veto) after it was approved by the Board of
So even in hyper-liberal San Francisco, closing one road on Saturdays couldn't even fly.
Adelaide, our eyes are upon you!