I'm specifically talking about the old-school, physical kind of ownership. Whether one could "own" infinitely copyable information at all is highly debatable.

> For example the law that was just passed that new cars will have to come with alcohol detectors

On the one hand, this is a welcome innovation because one is free to do whatever they want as long as that doesn't endanger others and drunk driving does endanger others quite a lot. On the other, if you own your car, what's to stop you from bypassing the detector like some people would bypass the seatbelt beeping thing?