Bill,

I am considering getting a backup camera for my COE flatbed.

As you noted, they will most likely be required equipment on new vehicles by 2018/2019.

A camera on a license plate holder seems a good idea.

Things to consider:
- how to view in the cab: maybe on a GPS screen?
- how to get signal from rear-camera to cab/dash-display: wireless, or wired, or fiber-optic