I don't really understand how these are used...are you meant to drive whilst looking at the screen? Unless you are driving tactically with no headlights whilst wearing a night vision headset, I can't imagine a situation where this would add value...it won't work in fog, you'd need some kind of FLIR for that. I'm guessing this is for slow manouevring in an unlit driveway, a bit like a reversing camera but with added low-light ability?