26/05/2019
China Rail's latest Mag Lev passenger train tops 600 kph.
That would hypothetically be Sydney to Canberra in 30 minutes, non stop but in reality there must be two stops.
If this was to be built, I think everyone could save hours travelling to airports and enjoy intra city travel with, City centre to City Centre connivence.
Then simply cross a platform for your desired Metro train to your destination.