I got to see the Google Map van in action a few months back. Had a camera going round and round atop a 10 foot pole sticking out of the top ov a mini van. At a stop light, the camera would stop. Interesting.
No mobile here because they're everywhere anyway. They come in handy if there's a bad accident on the freeway; it's on the news and one can drive around it. Most stores have them and all banks do. Corners where there's a lot of accidents the camera takes your picture if you run a red light and you get a ticket in the mail.