[fennecfoxen]

Existing lawn robots still mostly rely on a buried cable to form a boundary-line. The next generation vision/lidar/gps systems are clearly in development but not commercially available in the US (the Segway NaviMow is available in Europe).

[ftrobro]

Husqvarna EPOS does not need physical boundary wires and seems to be available in the US too:

https://www.husqvarna.com/us/discover/epos/

[samatman]

This year was the tipping point for the US market, they weren't readily available until late summer. I'll have a (ground) wireless lawn robot next year one way or another, it would bring me more satisfaction to build one but that doesn't mean I'll actually do it.

[fennecfoxen]

That's new — but those are still $5000 models "designed for professional fleet use", a little on the steep side. I'd give it a little longer for that to percolate downmarket towards the likes of the Navimow which is around the €1500 level.