Again though, you're not applying the proper legal test. The law isn't "who owns the property you're on" or "is the property owned by a business or individual," it's "do you have the 'reasonable expectation of privacy' on that property?" The former may factor into the latter, but it's not as cut-and-dried as your comments would make it seem.

edit: here's some precedent that may suggest you do have expectation of privacy as a passenger in someone else's car, though the scenario is different http://digitalcommons.tourolaw.edu/cgi/viewcontent.cgi?artic...

There's also another person there. In public you're supposed to find a secluded spot, not sure how much privacy you can expect in that situation.

Technically most hotels don't own their buildings either...