Car analogy doesn't work (in West Aus at least)
It offers an “imperfect” analogy to traffic infringements, noting that whatever penalties someone may incur as the driver of a car, punishment never extends to “the total denial of access to transport.”
A quick look on the WA Police site finds the following.
"For any applicable offence police must impound a vehicle for 28 days for a first offence. For a second offence they must impound a vehicle for three months. Upon conviction for a third or subsequent offence, as well as the normal penalties for the offence, a court may also order the permanent confiscation of the vehicle or its impoundment for up to six months."
Also, the Police tow the car away when they stop you, not when a court says you're guilty. There's been a few cases here where the driver has not been found guilty, but they or the owner have been without the vehilce for 3 months. Forget about compensation too.