Does anyone find their Onstar services beneficial? Enough to keep the service and to pay for it? I bought my '17 trax back in July and my trial is now coming to an end. I'm having a hard time deciding what is best for me or not on these services. As far as what I've utilized so far, i would have to say the Wifi. It helped tremendously to stream music while in a remote area on a road trip. Everything else, I didn't really use or need. What about you? Do you find any/all the services to be useful or no?