As the owner of several shaft drive BMW motorcycles, I am intrigued by the idea. A shaft drive motorcycle has a much lower need for drive train maintenance but there is a weight and efficiency cost. If shaft drives had the efficiency levels referenced on the web site then Moto GP bikes would be using shaft drives. However the use of the bike as a commuter bike seems a particularly good application. What I wonder about is why there seems to be no price listed on the web site?
I had found another shaft drive bike that I found interesting: