Transitioning into collaborative ownership (which would benefit all people involved) it would be a non-violent means of doing so as people would voluntarily do this based on the benefits.
Then maybe there is a future where these terms of 'ownership' would no longer serve us. I'm speaking philosophically with my ethics (the future I see) I realize this isn't done in one step. It's a process. So, collaborative ownership of all private property (i.e. commons) would be my alternative, thus removing any sole private ownership. The car example is poor, I'm referring to the commons where a vehicle would be personal (with added taxes from Commons used resources, but that is another topic.)
RE: War, taxation, and ultimately government itself will eventually go the same way as slavery and human sacrifice