yeah see ive been there done that already, but the specs on these are far better than any of my DIY cam cars or any that ive seen. these can operate autonomously, return to their charging stations on their own, you can log in from any web enabled device and control and or view the camera remotely, among other thing. they are pretty dope.
heres a short little clip of some video i shot with one of them at an outdoor mall.
http://la.gg/v/cam_car_outdoor_mall.asf