Traffic camera monitor on back of truck - GIF

Traffic camera monitor on back of truck. With the plummeting cost of video equipment these days, I wonder how cheap this would be to build.

https://s3-us-west-1.amazonaws.com/h...ear_camera.gif

Previously:

https://www.homemadetools.net/forum/...2978#post77214
https://www.homemadetools.net/forum/...3183#post77594
https://www.homemadetools.net/forum/...3514#post78220
https://www.homemadetools.net/forum/...3870#post78893
https://www.homemadetools.net/forum/...1276#post93323
https://www.homemadetools.net/forum/...3059#post97950
https://www.homemadetools.net/forum/...3540#post99383

Yabbut, the camera needs to be pointing backward and the display needs to superimpose a red circle to show how far out of its lane the car behind is driving. (Double points if it's a Tesla.)