The outgoing Infiniti QX56 was a vehicle that never made much sense to us. After all, you could get almost all of its equipment—save a few electronic trinkets—on the otherwise identical Nissan Armada, and you’d save thousands in the process. But the QX has been redesigned for 2011, migrating to a platform shared with the Nissan Patrol SUV, a Toyota Land Cruiser competitor in the rest of the world. The result is a machine more perfectly suited to its primary mission: ferrying well-off families to and from the vacation house, mall, and celebrity-chef restaurants that serve microhydrogenated candied aardvark liver.