I had a G37x from Hertz recently. Its a really great car to drive. I wish I had that car back home for the Autobahn.

But yes, the rear passanger space and trunk ist quite small - we booked a Luxury and a Fullsize and ironically the Camry was bigger than the Infinity.

Also the the USB function was a bit odd, had some playback issue and wouldn't sort by name but rather arbirary by file creation order (fatsort helps though).

What I found rather puzzling was that appearently there was no bluetooth connection possibility, but it did have the 'accept call' button on the steering wheel.