The inventor of Roomba has created a weed-slashing robot for your garden

Tertill

When it debuted in 2002, the Roomba captured the public's attention. No one had ever seen such a clever vacuum cleaner, let alone one that was hands-free.

Fifteen years later, Roomba creator Joe Jones may have come up with the next ground-dwelling superstar, only this time the machine works outside.

Here's what Tertill is all about.