ok, probably a bit off topic,, but may help someone in some way
I have a double din head unit in my car,
it has reversing camera input,, and also AUX input (yellow,red,white rca's)
So,, what I did was hook up a reversing camera (with night vision)
and hooked up a front camera (front bumper cam), and hooked it up through the AUX input,,
now these camera's don't have sound,, but u can get ones with sound but I was on a budget,,,
with my head unit, I can go into aux mode, and watch "front bumper cam",, and by pressing a button on the remote, I can switch to rear bumper cam,, and back and forth (its more of a novelty for the passengers but you get the idea,, also rear camera helps with reversing at night time),,, also the head unit has Video output,, so I'm thinking I'll hook it up to a laptop and record the video footage (that's if its actually that simple,, haven't tried yet),,, so yeah,, that's how I did my in-car camera setup,,
front and rear are both colour camera's with night vision in black and white.. head unit is out at the moment,, otherwise I would have taken pics of the setup and shown what the footage looks like on the screen..
both cameras are ccd,, would have used cmos (quality of colour footage is much better with cmos) but they were more expensive back then,,,
grey (mine is a bronze colour) camera is what i used as front bumper cam (did not buy wireless receiver)
and black one is what i used as rear bumper cam