A (sufficiently complicated) cross-border ownership arrangement should make machine-owned property undetectable.
It would be a machine operated business, but not machine ownership. That would require a change in law.
How can a machine break the law?
EDIT: If there is a positive answer, it might be similar to how money and other assets can be sued in asset forfeiture cases.
Guns and cars aren't prosecuted for murder. I'm assuming autonomous cars won't be either.
Whilst there's no reason a machine couldn't be a legal person, in the sense that the sentence describes a possible future, that future is not near, and it will take more than a competent robolawyer to bring it about.