So the final update for this issue: despite what Nissan's warranty website said when I entered the VIN for my Hybrid, it is NOT covered under the warranty extension, and this has been confirmed by my local dealer. Very torn, as I love the car, but just can't see myself keeping it past 60k as the transmission is just too ridiculously expensive to risk having to replace out of pocket.
As it is, I just hit 36k miles at 2.5 years of ownership, so the bumper to bumper is gone. At this rate, we'll have to trade it in less then two years from now. I think the working plan is to migrate to something larger (like the Armada, Suburban or GMC Denali XL) for the wife, and I'll take over her Pathfinder, which is now been ours for a hair under 3.5 years, and just hit 32k miles. We'll have paid hers off by then, and so will only carry a note on whatever oversized behemoth we settle on...hopefully, gas is not back at $4.00/gallon by then.