There was a recent Amex deal for rentals through evee. Although they have a referral program it has yet to be added to the OzBargain database. If you do use a referral code and that Amex deal, they should stack to give $75 off.
The referral program is $25 off first rental for referee (minimum $200 spend), and $25 credit for referrer (I've already paid for my rental so I miss out)
Given that Tesla sales are some of the most popular deals ever on OzBargain, I suspect a few people might be interested in testing out a model S/3/X for a few days.
Once mods add evee to the referral list this post should have links to the program - I won't add my code yet.
Referral randomiser is active.