We've seen robots decapitate themselves in their attempts to play football, so now they are attempting to take control of the game in a different way. By mowing the pitch with minimal help from humans. That sound you just heard is all the Groundskeeper Willies of the world gasping in horror...
...weed wacking....? and you run out of gas or string. Worse yet you have to go to the gas station or hardware store to get more.
sorry about that Mrs Rose