So I just took a trip from NJ to Peabody mass and then Bentley college in Massachusetts and I have to say the navigation did an excellent job of routing me around traffic. I had someone following me and when I hit heavy traffic on 95 outside of Boston area about 15 miles from Peabody it had me exit and take some back roads. I arrived at my destination 45 minutes earlier then my buddy who decided to stay the original route.
I have to say route 15 in Connecticut is the most fun road I have ever driven, 73 miles of a roller coaster ride. I had a blast on that road.