The distance is something that is flexible, the farther the better. Most likely there will be little amount of objects between the cars.
They will be stopped, one to be parked in front or somewhere close to the target, and the second one around the corner or down the street.
I tough of 3g only for controlling, with a really small quality and refresh rate. And recording would be done locally.
I've tried Wifi, but i think the car structure created a lot of interference, thus reducing it's range. I have to admit tough, i haven't used special equipment, only a home router (****ty dlink).
Anyone tested any setup similar to this?
Anyone have any recommendation of routers or higher range technology?