Thank you all. It's interesting to see what people see and notice, after working on the image for a longer time I certainly lost the ability to look at it with a 'fresh' eye. Postproduction has been heavy on this one too, so I may have decided to emphasize one thing and forgot about another. Plus, something tells me it's still not finished but I need to move on.
I hope to have more of these full CG setups in the future. I actually would like to do some personal car rendering projects where I can involve TG, with some really spectacular views. Though I really need to learn more about the in-depth stuff in TG first, when looking at some of the setups posted here regularly by some of you it feels like I've only scratched the surface of what's possible, there's some amazing stuff in the gallery here!