One of my biggest complaints is in my field of work is digging under sidewalks and bike paths. It costs to much to cut a section out and then pour it back, and it takes way to long to hand dig under one. In my area we can't just cut a section out, then put it back in loose like the southern states guys can due to the frost we get in the winter. So last night I came across this. Its just a simple earthquake one person auger but modified just a bit. I talked to the owner/designer of this tool today to get some pricing. $1250.00 with out shipping. Comes with the power unit, a 3" head, 6" head, and 2 4' extensions. If it could cut my labor and time down, then the price would be worth it. http://siboredrill.com/ J.