Here are some interesting blank chapters in '07 sedan service manual:

[Hybrid chapter]
Hybrid Control System
Hybrid Battery System
Hybrid Brake System

[Suspension chapter]
Suspension Control System

[Restrains chapter]
Seat Belt Control System

[Driver Information & Multimedia chapter]
Sonar System

I wonder if these may be some options in the works for '08.

 

Sonar system?? Cool! Maybe Infiniti is planning an amphibious version of the G.

 

Sonar...hmmm..wonder if it's related to Nissan's Sonar (adjustable shock dampening) suspension system back in the day...doubt it...since it's not listed under the suspension chapter...

Hybrid...very interesting...I think I might trade in my 07 for this hybrid so that I can actually get above 20mpg. haha

 

That must be the lane departure system from the M.