I don't have a 6, but back when I had a car that I deemed worthy of a photoshoot, the photographer I hired had some nice places in mind. We went to an alley between old brick-walled buildings, we shot in front of some older city-owned buildings, in a parking garage.. but I think the most important thing was light. It's a lot easier to get great photos when it's a little overcast and not too sunny, or late in the afternoon. Some photographers can work their magic during the post-edit with almost any photo, especially photos taken at sunset. The guy I hired had just started shooting, but had some experience with post-edit software.
For nighttime shots, the photos I've seen online are usually at those well-lit gas stations, or under a bright streetlamp.
