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."
http://www.police.wa.gov.au/Antisocialbehaviour/Reportinghoons/Impoundedvehicles/tabid/1570/Default.aspx
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.