https://onezero.medium.com/tiny-weed...e-99b3a6359c39
In a nutshell, mostly autonomous robots that repeatedly mow down weeds until the weeds die as a replacement for human labor and herbicides. One robot handler to take over manual control if a robot runs into something it can't figure out (or it gets shut off/stuck/etc) but otherwise lets the fleet do it's thing on it's own.
A pretty damned cool idea.