Tip: Make sure there are no bug, or smudges in the view of the camera if you are shooting from the inside of the window, out.
I enjoyed the videos. There are mounts for headrests or even suction-cup camera mounts that you can buy cheap pretty much anywhere (depends where you want to mout it). I guess it really depends on what kind of camera you have and what you're willing to subject your camera (lens) to.