Hi Batz,
Looks like Adelaide home Brewers don't hire motor cars very often.
I think car rental is like beer, if you steer clear of the mega companies then you should be OK.
Go to the yellow pages and find one that is close to the airport( but not at it ) or in the western suburbs somewhere, and they usually are keen to do a deal.
There was a mob on Dead Batsman Drive a few years ago that used to be cheap but I cant remember their name (could have been Jiffy or Thrifty or Shifty).
Of course they may not be there now.
Don't tell 'em that you are coming to my place in it as the speedo may stop working for a while and what they dont know wont hurt 'em :lol:

B)
Other alternative is to get your bro' to drive you around and then you can sample a few more beers each day.
Hope this helps,
Cheers