Another interesting little 'feature' - yesterday, driving home from the Boston area to Central NJ, the nav changed my route twice - neither time did it notify me or give me an option, it just changed it with no notification at all. I have my nav setting to change the route if it saves 10 minutes but I recall that it would give you the option to choose the new route - so you'd get notification that a faster route was available, and whether or not you'd accept it. Yesterday, it just changed both times with no warning or notification at all. Strange.