Originally Posted by jphughan
Dynamic rerouting (or dynamic guidance, whatever it's called) isn't enabled by default, but yes if you check the box you get this rather sweet feature. Although be careful, sometimes it tries to send you along pretty ridiculous routes to avoid pretty minor traffic.
I remember it sent me through the canyons this one time, when it was pouring rain and dark at night.... I was in a very unfamiliar area so I just followed it
if it was day time, that would have been a great route..