A little light-hearted entertainment for you. The politically correct response is abject horror and "how dare they..." but its not on a public road. Besides, lets not pretend that the police give a damn about their patrol cars or that we do either for that matter.
Victoria have anti-hoon legislation that allows them to impound vehicles involved in this sort of 'hoon type' behaviour. In this situation, would they impound their own car...?
I know...who cares.