I've been playing around with Driving Mode. While in that, you can talk to your phone and do various tasks. I haven't actually tried anything other than voice dialing, but that is nice. When in Driving Mode, the phone will speak and tell you who sent any incoming text messages. I get the impression that it is supposed to read them out to you, but I have not had that happen yet. Driving Mode seems pretty powerful, but I too have been struggling to understand everything that it can do.