There are plenty of legal race tracks on private land where you can go as fast as you want. Just do a search for "track days" in google. Here is some examples:
http://www.driveevents.com.au/ (Phillip Island)
http://www.wintonraceway.com.au/drive/fun-days
Or you could join a car club. They often organise track days for their members.
Have fun and stay safe,
Glen
http://www.driveevents.com.au/ (Phillip Island)
http://www.wintonraceway.com.au/drive/fun-days
Or you could join a car club. They often organise track days for their members.
Have fun and stay safe,
Glen