Rear view camera(s)

[turbodog]

I don't feel a need for a back-up camera. I do, however, feel side-looking cameras would be very useful. I cannot see if a car is coming when I am backing out of a parking space, until I am way out into the aisle. The rear pillars just completely block the view. Anyone else have this paranoia that they're at risk when backing out of a parking space? Anyone tried side-firing camera(s)? Anyone know of a compact switch to allow selection of the (left-looking, right-looking) cameras (baseband video, I presume?)?