Well, so far, I have already hit a snag. The camera wires into your backup light circuit (which is obviously only on when backing up) so it would be intermittent. I need to find(or run) a wire going to the rear to splice into the system. If I have to run one, that would defeat the purpose of the wireless aspect.. The only other limitation I would list right off is that the screen is only 2.5", making it somewhat small, but for just glancing up at to see behind, it should be able to give you an idea of something back there. The screen also shifts display orientations at the push of a button allowing you to mount the monitor at 90 degrees if you had to.