Oops. You're right, drwebb. The Xtroid (toroidal CVT) is used in the Nissan Cedric, not the Murano. The Murano CVT is a "traditional" belt-and-sheave system. They're putting 350N-m through a 30mm wide belt, which is quite a bit more torque than anybody's been daring enough to try...
The Murano is not a belt-and-sheave CVT, but a toroidal CVT. Again, it's not a new idea, but it is a new product and quite different from any OEM's expertise base, so its long-term reliability is risky.