Ok, I've turned my head in about all possible ways. To find out that this image is standing up, very normal. Great, my neck... Great reflection in a car window. Destabilizing indeed but well done
Whoa! Angled mirror? Great use of a tool to create a topsy turvy world view. I like the presentation of the angles and warping of the physical space to play with one's visual senses. The biggest thing holding this back from it's full potential in visual appeal is the balance of contrast between light and shadow. Perhaps playing with Levels will help make the black tones deeper, get good midtones and sharper whites for more dynamic tones that make the image pop.