I tried a variety of different things, and found surprising results. Lots of errors, of which some were pretty obvious-- it can't find my house, for example; can't seem to distinguish different zip codes, and house numbers are a half mile off; etc. Other errors would not be obvious if you don't know something-- it put me on a Delaware River bridge that doesn't bicycles, and would put you 20 miles from the nearest one that does; finding this out too late would be a real bummer. Even so, after a couple misfires, it came up with EXACTLY the route I have chosen, after considerable trial and error, for my commute.

All in all, I give it a passing grade even at this early stage.