I'm starting to see a few around...today was a platinum graphite one on Rt. 59 in Aurora. Some of my previous sightings were likely test drives as I work near the dealership.

 

I live in Rockford. Bought at Motorwerks Barrington Dec 4, 2006. BLACK on BLACK Sport, with every option except mud flaps. I've seen no others 07 G35 yet.

 

I'm in the area too. So far I've seen two - one about a week before I picked up mine (1/6) on Rt. 38 and the other ~2 weeks ago near BP in Naperville. Also, I've heard that people see more of the new Gs in the northen 'burbs.