I saw someone mention a "module" that could be installed that allowed the factoy nissan navigation system to be able to play DVD's. So I looked up their website (NAV-tv.com) and I just called them. According to the guy I talked to Nissan has the same navigation system as Infiniti (no surprise there) but they have not installed this module on a Z yet. I was told to expect to pay around $1400.00 which was WAY MORE than I was expecting to hear. Anyone else no more about this mysterious module..let me know