At first I just skimmed over your post and only read that you used a 50mm lens before looking at the picture. I nearly fell off my chair because I haven't seen any Photos like that before with a 50mm. The resolution, the colors and the reflections on the car are absolutely stunning!

Thank you very much for sharing the Brenizer method. I had never heard of it and I will definitely have to give it a try for myself very soon!

I would say that this is just the right picture for something like postcards or posters. Or maybe as a large format print? Did you consider selling it? If so, I would clean up the silhouette of the moon and the reflections it casts on the right side of the sky. Or maybe even remove the moon entirely? I'm just saying that because I think that it would make the picture look more polished. I'm not a huge fan of perfectly polished photos but I know that many other people are.