flowerbug
Garden Master
looks like fun!
www.geekwire.com
likely very possible to get it all solar panelled up so it can really fry those weeds!
the only part of the article i don't agree with is the statement that weeding is not fun. i do enjoy it for many reasons.

Isilon founder lifts the hood on farming startup Carbon Robotics and its weed zapping machine
Carbon Robotics, a Seattle company led by Isilon Systems co-founder Paul Mikesell, is unveiling its self-driving robot that uses artificial intelligence to identify weeds growing in fields of vegetables, then… Read More

likely very possible to get it all solar panelled up so it can really fry those weeds!
the only part of the article i don't agree with is the statement that weeding is not fun. i do enjoy it for many reasons.