I don't know if it is photoshopped or if the photographer knew what it would like like when he or she took the photo and only saw it when they printed it and enlarged it. It is very good though isn't it
Personally I think it is photoshopped as the dark areas aren't consistent, particularly the dark area that becomes the front wheel and the dark area that makes up the side windows and wing mirror.
But that said it is a clever photograph.