Sorry to jump back into this late... think I know why in SoCal I can't even hear the car... everyone has heard about the transmission failures where, in some cases, Nissan says, "You grenaded it... that will be $20,000 to replace." And/or... it's SoCal and this is the new poser car of choice... hehe
Only seen one "driven in anger"... in Louisville, KY... man, THEN it sounded good.
If I had one, my gas mileage would absolutely be atrocious!

Kind of like the G35 that I try to keep at around 3,100 RPMs all the time... hehe
And yes, the 370Z sounds very nice... now if only I could live with the exterior styling since the motor/transmission/interior are all so nice... (sigh)