A few more questions?  How does the engine to be used in the G37 Sedan compare to the engine in the G37 coupe?  Do you think Infiniti will gear the G37 Sedan for better gas mileage?  If so, will the bigger engine compensate for any loss of acceleration by gearing the car for gas mileage? 

Great find Brandon, and very interesting.

I think it is a very good move on the part of Infiniti to release the G37 Sedan in the US, a very important market for Infiniti, and not just in Europe.  I also think it is great that Infiniti is making the G35/37 a better car.  But I do wonder why Infiniti is making such a major change to the G35 Sedan only two years after release of the 2007 model.  Since the actual shape of the car has not changed, does that limit the cost to Infiniti of making the changes? 

Is it true that most car manufacturers tend to make a significant redesign of a model every approx four or five years, and then just tweak it a little in the intervening years?  When the G35 was first released (in 2002 as a 2003 model?), Infiniti thereafter did not release a major redesign of the car until 2006 for the 2007 model year.  For the 2003, 2004, and 2005 models, was there an upgrade nearly as significant as the G37 Sedan upgrade of the G35?  If not, what do you think has motivated Infiniti to accelerate the pace?  The G35/37 obviously is a very important car for Infiniti, as it accounts for most of its sales.

A few more questions?  How does the engine to be used in the G37 Sedan compare to the engine in the G37 coupe?  Do you think Infiniti will gear the G37 Sedan for better gas mileage?  If so, will the bigger engine compensate for any loss of acceleration by gearing the car for gas mileage? 

This a good move by Infiniti even though I think the G could use a smaller engine choice.  I know a BMW 1 series competitor is right around the corner but it won't have the room of a G sedan.  07G35S, I don't know the legitimacy of your pics either, but I do like that wheel design.  Infiniti is getting more and more crazy with their wheel designs (i.e. new FX).

The 3-series doesn't even have the room that the G35 has... the one series isn't even close in comparison.  And yeah... they offer the Skyline  250GT in Japan like Sean said.  Here they offer the 2.5L for those fuel conscious minded folks with ANOTHER economical enhancement = FWD its called the Nissan Altima