2008 Mercury Mariner Hybrid drivetrain & axles problems

This would be the second un-warned total loss of power on a freeway. Having coasted out of traffic on the first unwarned engine / propulsion system shut-down in fast-moving freeway traffic, managed to find wide-enough section of outside shoulder to come to a stop. But being stuck in 10pm darkness on a narrow shoulder was too dangerous to consider remaining there. Once stopped, I shifted the transmission to park, cycled ignition off then to start ?

Tl* the contact owns a 2008 mercury mariner hybrid. When the contact placed the vehicle in park, it began to roll. The contact stated that the vehicle exhibited the same symptoms as listed in NHTSA campaign number: 15v606000 (power train). The vehicle was not taken to a dealer to be diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 140,000. Updated 11/30/18