With a little over 2,000 miles on my Yukon I’m finding that I really like Supercruise. We have two homes, a townhouse in the Chicago ‘burbs and a cabin in SW Wisconsin, and drive between the two frequently. On shorter drives it’s more of a novelty, but now that I’ve made the three-hour plus trip a couple of times I really see the benefits of Supercruise, with about 70% of my route being mapped for its use.
You certainly can’t snooze at the wheel, and on those occasions where I’ve tried to test the system’s nanny functionality I’ve found that it reliably alerts you when your eyes are not on the road. What I do find, though, is that it does cut down on fatigue and makes the trip seem to go much faster. I suppose it’s a matter of not having to constantly fiddle with lane position and speed, but whatever it is I find I’m much more refreshed after the trip.
Overall, I think it makes longer trips safer. If you do attempt to mess around with something else in the vehicle it alerts you, and it still requires maintaining a focus on the road. On occasion—either because the road isn’t completely mapped or because the road markings are obscured—it’ll alert you, then disengage, keeping you aware of the fact that it’s not fully autonomous. This brings up my only criticism, which is likely just a result of its newness: some roads between bigger towns are not yet mapped, and others that show on GM’s map as having been mapped are not as fully covered as indicated. I’m sure that with time and periodic updates this will be less and less of an issue.
So, for me it’s a winner: less fatigue and possibly a little safer. I’m a couple of years away from having to pay for the subscription, but I’m likely to do so, particularly if GM continues to update its coverage. Of course, as this sort of tech continues to advance, I also imagine that in just a few years Supercruise, at least in its current form, will come to be viewed as outmoded. Until then I’ll enjoy it.