Yep... I have a feeling it's going to boil down to road noise...

I just got a quote to have my entire car completely sound proofed. 1k labor estimate and 900.00 materials, unless I can find them online cheaper which I'm sure I can.

 

^ do that yourself...it would be a good chance to really get to know your G... another option might be to relocate the microphone/bluetooth setup somewhere/somehow (I have no idea if its even possible) or to upgrade the microphone.

 

My 07 coupe works great. I always have the windows up. Every now and then I can't get the system to disconnect after a call, and "telephone" stays on the radio display until the car is turned off.

 

^ My 06 has occasionally done that too. There was a thread on that issue somewhere on Driver not that long ago.

I found if I toggle my bluetooth off on my phone, radio comes back on, steering wheel controls work again, etc. Then turn bluetooth back on with phone, it re-connects to G system and I'm all good again. Weird stuff and in general this Infiniti system is a PITA lol.