In article gCSrb.116824$mZ5.787429@attbi_s54, James Sweet
writes

In the UK, it's illegal to have such a display active while you are
driving. They are normally wired up to the reversing lights so that they
can only be activated when reversing. I don't know if this is a
consideration in your part of the world.

That's silly, why would a rearview display be illegal? Are rearview mirrors
illegal too?

It's a side effect of legislation about not watching broadcast TV
programmes while driving. It's illegal to have a TV in the view of the
driver, whatever it is showing.
--
Tim Mitchell