If you stick a 360 camera on the outside of someone's car and hit record, and they drive around unaware (but with an earlier agreement that it is ok to mess with their property), you get the copyright. If you stick a 360 camera outside of someone's backpack and hit record and they walk around unaware they get the copyright to the footage as the cameraman.
Assume an earlier agreement that placing/activating video cameras like this at some future time would be ok but no agreement on who would be the author and no copyright transfer agreements.
I imagine it would work out roughly the same as if security camera footage was copyrighted, but as far as I can tell there really isn't a clear precedent in the US for this. The monkey selfie case suggests that they probably aren't, but as far as I can tell it's a legal unknown in the US.
If you stick a 360 camera on the outside of someone's car and hit record, and they drive around unaware (but with an earlier agreement that it is ok to mess with their property), you get the copyright. If you stick a 360 camera outside of someone's backpack and hit record and they walk around unaware they get the copyright to the footage as the cameraman.
Assume an earlier agreement that placing/activating video cameras like this at some future time would be ok but no agreement on who would be the author and no copyright transfer agreements.