The robot arm would still have to be mounted on a truck, wouldn't it? It's not like it will be half a mile long and just reach over the whole field. Also, robo

The robot arm would still have to be mounted on a truck, wouldn't it? It's not like it will be half a mile long and just reach over the whole field. Also, robot arms can be a quite expensive way of doing things; I saw a prototype that used tethered drones (like the common quadcopters, but power and data comes over a cable) to manipulate things as apparently it was like 10 times cheaper than a robot arm capable of reaching the same distances and transporting the same weight payload.