Won't be long before motorised (internal combustion engine) bicycles are completely banned in every state and territory in Australia.
The ramifications of such laws are totally draconian, because police will have the power to confiscate the bicycle and throw it in the impound centre. The cost of getting your bike out of the impound centre is $800, plus the cost of tow truck fees to take it there.
Then you will face fines for an unregistered vehicle, which in Victoria is $1000, and that's just the start of the fines. It gets a heck of a lot worse if you don't have a motorcycle licence or you are disqualified from driving.