There has been a few posts from non-Mexicans asking about the best tracks etc for the VIC High Country. These notes were published a while ago but they are a good reference for some very nice drives.
•Grampians Drive - Rugged mountain peaks and dramatic rock formations
•Otways Drive - Stunning coastal views, tall forests and waterfalls
•Mallee Drive - Remarkable Victorian outback landscapes
•Wonnangatta Drive - High Country History and heritage
•Snowy River Drive - Journey to the heart of legendary Snowy River country
•Davies Plain Drive - Remote and challenging Alpine country
http://www.fwdvictoria.org.au/iconic4wd/index.html