It has been a long time. A very long time since I reloaded my snow removal robotics project. Eight years of research and development. The truth is business and innovation are war. It takes struggle sometimes to develop new innovation for pragmatic consumer markets.
I use to work with companies like Spider who are more successful with this technology but we all have product education and sales issues.
Many of my iteration for my invention have been successful. You can find more of my research on robotic snow removal here:https://www.facebook.com/snowbot/
Here were some attempts to monetize the idea and other prototypes.
Then of course Japan developed an efficient version the Yukitaro.