For anybody interested in purely Aussie stuff involved with my hobby this gives an idea what can be done these days..
https://www.youtube.com/watch?v=3ANsPfcP0pM.. and a Victorian one as well ...Note some scale Aussie cars here and there too .
.
https://www.youtube.com/watch?v=l08d5SC5DTM
There was a time when making an authentic Australian layout was more difficult and expensive but companies like AUSTRAINS , AUSCISION, EUREKA and SOUTHERN RAIL MODELS just to name some and are making more items every year . Not as cheap and as vast a range yet as North American and European companies but certainly greatly improved in the past few years . Includes , locomotives , rolling stock , signals , buildings , road and excavation vehicles and even some tree and ground packs ..