https://boygeniusreport.files.wordpress.com/2017/06/ecovacs-winbot-w830.jpg

> We truly are living in the future. We have robots that vacuum our rugs, robots that mop our floors, robots that open our jars and cans for us, and now we have robots that defy gravity to clean things like windows, shower stalls, and mirrors.

http://bgr.com/2017/06/15/robot-window-cleaner-amazon-sale/