Might not have ever pitched pg, since they're hardware and probably needed a bigger initial investment than YC does to make sense, but Blue River Technologies i

Might not have ever pitched pg, since they're hardware and probably needed a bigger initial investment than YC does to make sense, but Blue River Technologies is probably the most ambitious thing I've heard of. http://techcrunch.com/2012/09/10/blue-river-technology-raises-3-1-million-to-build-robots-to-replace-chemical-herbicides/ http://techcrunch.com/2012/09/10/blue-river-technology-raise... The original product was a robot that zapped weeds with lasers, they switched to a superheated oil because it's cheap enough to be practical.