I thought it (whatever "it" actually is) came as standard on all 370Zs. Never paid any heed to it to myself. Sounds like a too good to be true gimmick.
I doubt you'll get any joy out of Nissan. Best to invest in a DA polisher, correct the paint, protect it, and try and follow good washing techniques. My current Z came with bad swirl marks. I managed to get a pretty decent outcome with a modest investment, a bit of research and my first ever go at correction.