Yesterday I went on my very first "road-trip" in USA, driving from Redlands up to San Luis Obispo to visit a friend of mine, a 5-6 hours drive. Of course I brought my TomTom navigator to help out (since I had more or less no idea how to get up there), and already after 10 miles of driving it got handy, when the whole I-10 freeway closed, probably because of yet another accident. TomTom has a neat little feature to avoid roadblocks or entire parts of the trip, and provide you with an alternative.
I wasn’t too sure how up-to-date the map was, but thought I would let it guide me on a round trip. Well it turned out that the maps were a little too up-to-date, when it suddenly wanted me to enter an only half completed freeway :-). Good thing I brought my paper-maps as well, although they are far harder to use while driving ;-)