The huge eight-seater is built on the Nissan Pathfinder platform, and is powered by a 396bhp 5.6-litre V8.
It's totally unapologetic in its approach to size and power, too – something that American commentators have picked up on.
See the Infiniti QX56 on video
Click below to watch our video from the New York motor show.
The Infiniti QX56 video
The cabin is luxurious, and the QX is loaded with every conceivable feature, but this really does seem like a car from a bygone era – even for the US.
It will cost from $56,700 (£37,000) when it goes on sale in the US this summer. There are no plans to bring the car to Europe.