The Ford Falcon is a full sized car made in Australia. While the Falcon died in the US during the 70s, it lived on and grew up "down under". Yes, the VN Commodore is another.
The Holden VN Commodore was a full-size Australian-market car. For current production cars, there are the VE Commodore and the Statesman, as well as others.
Yes, it most certainly is. The Holden VN Commodore is the sixth model of the Holden Commodore, which is a full-size car produced by Holden, which is one of the most famous Australian auto manufacturers.