Yep, I suggest the rental car companies have had their legal departments ensure the contract is worded in such a manner.
I expect the liability remains with the renter unless they can prove otherwise, such as providing a police report showing the vehicle was reported as stolen at the time the infringement occurred.
I was meaning that liability for payment to the rental company can be completely separate from liability in the legal sense towards QLD police. if this was a more serious offence (for example excessive speed resulting in loss of licence), you could not simply take away the licence of someone without proper evidence to support it.