Did you take the liberty and created a new map for Sydney, which is maybe not perfect, but close?
Good question, will these be replacing the maps on
http://city-driving.co.uk/maps/ ? Since some (Blackwood mainly) are quite outdated, others I'm not too sure if speedlimits are also the same etc.
I don't care much for that page. Maybe it should be removed. The new maps are listed in the manual
https://world.city-driving.co.uk/?page=manual
I was actually working on a BL map too, but didn't quite finish as it is a bloody giant and repetitive design.