While there are more likely scenarios where it would help as well, cases like this do highlight the potential life-saving uses of OnStar. And now that they have their add-on product (OnStar FMV), its an option for everyone not just GM owners.

Frankly, the chance of being in a vehicle related emergency is probally much higher than being in a backcountry emergency, so I wonder if OnStar is a better investment than a PLB or SPOT (not that its an either / or scenario).
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Victory awaits him who has everything in order — luck, people call it. Defeat is certain for him who has neglected to take the necessary precautions in time; this is called bad luck. Roald Amundsen