What does this discussion hope to resolve? Do photographers not have artistic freedom to do whatever they want with their pictures?
Stop trying to categorize everything, putting them into neat descriptions of things we can understand. Just appreciate the art for what it is, and take what you can from it. Maybe do some research on the photographer, or even contact them to ask questions. You may find something you didn't expect to find. Most importantly - keep an open mind.
Finally, look at the amount of discussion this created! That in itself makes the photograph of the truck successful.