User blog comment:Semanticdrifter/Understanding Fair Use/@comment-256681-20121127230206/@comment-166269-20121201013427

You're confusing the owner of the car design with the owner of the physical automobile. While you're right that the automobile owner doesn't have any real say in the matter (though it's obviously preferable that you get someone's permission before photographing their property, and if you're trespassing on private property to get a photo, you've got bigger problems), the owner of the design of the vehicle does own the parts of your photo that show the vehicle. This is what Lunarity was saying.