I have been doing product development for a CCTV/Camera company for motorsports, aviation, and government applications for a few years (ever watch SPEED Channel, Australian V8 Supercars, World Challenge Touring Car and GT...that's my stuff). There is quite a bit of stuff out there, sounds like SteveC can hook you up also. You can get a good 2 or 4 camera setup for as little as $40 per camera + DVR (low $25 for USB to PC for storage, up wards of $500+ for the cheap ones and, well, sky's the limit for the expensive ones).