Australia's car manufacturing industry is basically non-existent, they import almost all of them. The EU and US have huge manufacturing bases they're trying to protect
I'm not super into cars, but it's my understanding Holden was a local manufacturer that got bought out by GM? Or if not that, then they were making specifically Australian vehicles despite being part of GM, much like Ford Australia used to. Both ended up shutting down operations down here, so now we have nothing local.