Chris J.
Addicted to ArboristSite
Already was explain what is it.
Indeed he did post the story. I should read more carefully before posting.
Don't know the engine size, but found it at Wayne's Chainsaw Museum.
Supposedly he and an employee built it to look like a hot saw they were hired to build. Uses a model airplane motor.
Next time I'm in Washington, I'm gonna check this place out. Looks pretty cool: