https://bigbuild.vic.gov.au/news/north-east-link/tbms-resume-digging-victorias-longest-road-tunnels
https://bigbuild.vic.gov.au/projects/north-east-link/design/north-east-link-tunnels/map
https://bigbuild.vic.gov.au/projects/metro-tunnel
https://bigbuild.vic.gov.au/projects/suburban-rail-loop London has the Circle Line, Chicago has its elevated loop, Toronto has an underground loop, so it makes sense that Melbourne would also have a train loop.
https://bigbuild.vic.gov.au/news/suburban-rail-loop/faster-easier-journeys-with-srl-east Melbourne like most real cities, have an extensive regional road system, but having a good regional rail network might even be more important & beneficial. https://bigbuild.vic.gov.au/projects/suburban-rail-loop/about/project-benefits
Unfortunately, Greater Vancouver is still lacking with its transportation infrastructure.
https://bigbuild.vic.gov.au/projects/regional-rail-revival
https://bigbuild.vic.gov.au/projects/roads
https://bigbuild.vic.gov.au/library/west-gate-tunnel-project/maps
L.A. and Melbourne in the 1960s really started to plan on a big scale. Of course Vancouver went in the opposite direction.
https://libraryarchives.metro.net/DPGTL/maps/1968_final_proposed_transit_master_plan_concept_map.jpg , https://cityplanning.tumblr.com/post/24841307901/past-visions-of-l-a-s-transportation-future
https://transitmap.net/1969-melbourne-plan , https://images.theconversation.com/files/303673/original/file-20191126-112489-1mpon3i.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip , https://theconversation.com/50-years-on-from-the-melbourne-transportation-plan-what-can-we-learn-from-its-legacy-127721
