Help with Backing Up

I was recently checking on wireless back up cameras and saw one that used a magnet to attach it. Sorry,I do not remember the brands. Seemed like a great idea to me. You could move it from the trailer to the back of your tow vehicle as needed. I am surprised someone has not come up with a way to mount one on one of those remote controlled spotlights on a lot of the utility vehicles I see in the area. It would be great to mount one high and just be able to move it around to whatever area you wanted to see.