They can see through it, and it doesn’t work while on a moving subway, according to a video I saw yesterday, so I fail to see how it would work in a car. At least for now.

(You can do stuff with it while stationary, but when you start to move the content stays static and drifts away, then tells you it doesn’t work while moving. Jury is out of it would work on a plane. This makes sense because the thing locks what you are doing into place so you can look around and whatever.)