Today on Newsround there was a NON–drivable tractor that could move itself around and it could do everything tractors do when humans sit on it but this machine could do it all by itself!
Another story on Newsround was a drone that told farmers when their fields were finished being ploughed by the driver-less tractor.
The last machine story was another drone that went under water instead of in the air. It was made to kill of some species of armoured starfish.
