Well the idea has merit for all of us who cannot manage to drive without doing other things, but in practice it has a few bugs.
First - the tray does work, if you are driving straight. I don't have any pictures of that because I cannot drive and film at the same time. Yeah, I do other dangerous driving things, but not filming.
Second - The tray does not work if you are turning corners often.
Holly told me that the tray should be heavier and then it would stay upright better. She is right. I did not figure out a way to do that without the weight getting in the way.
All told, it was an interesting experiment, but not the key to fame and fortune from patents. Here are a couple short vids of my experimentation.