Crushing cars sounds tough but its a bit of an overreach. While the law does allow for it following forfeiture, there needs be a convicton/court order. It isn't up to the police or a mayor to decide if that's the outcome, nor should it be. There are a lot of streets in our community that encourage hooning - Glebe Rd, for instance, is a 1km long, straight sealed road with no treatments to discourage antisocial behaviour, so we're subjected to speeding, hooning and animal carcasses.