I have been using the X10 cameras at my paintball field for security.
I have 3 of the black and white low light ones in the staging area where the folks keep their stuff while playing.
Theft has dropped to almost zero!
I have the same color camera setup you have mounted on the bus and hooked into the TV with a video switch.
It's cool that you have sound too!
When I use mine, it is projected on the TV behind me.
I use the interior mirror to check the TV while I watch the rear view mirrors on the outside while backing up.
It helps quite a bit.
Also later, when I start using a toad, I can check up on it every once in a while.
FYI, I have had the color one for about two years and used it for everything you can imagine - well, maybe not
- then put it in the bus.
If you look on page 6
of my web, on the picture of the rear of the bus, you can see the little X10 sitting on the top right where the flashers used to be. It even has it's own little "awning
" made out of aluminum.