This is somthing I have wanted todo for years. There have been a few wreaks that have happend infront of me that would have been nice to capture, And a couple of near hits from people doing stupid stuff infont. (last year had a lady try to merge into my hood forcing me off the road, would have loved to post that video online saying WTF). And of course I figured if I did that I would also mount one on the back of the trailer. Could help allot when backing. And then maybe one on the right fender watching the so called blind spot. (although not really blink with the way I have my mirrors setup). But I have heard of several states where it is illigal to have such system on your truck. New York being one of them.