Just wondering. . . Is there a single Coates Gen S

Just wondering. . . Is there a single Coates Gen Set operating in the field? Has anyone bought one? Is there any historical run time data other than what George has generated that can be looked at? What are the chances someone is going to invest millions in an untested product? Why would you not give away a few of these units for that purpose? If I missed that information, I apologize in advance. Would really like to know.