When is a door not a door?

If you're old enough to remember the old joke that I used as a title for this post then you may know the answer to the identity of this striking piece of rust-art. In purely abstract terms the shapes, lines, and colours present a bold image, but look closer and you'll find the textures of worn faded paint, cracked dried out rubber, and hard chrome trim, and the realisation that you are viewing part of an old car on its side. Have you got it yet?

So when is a door not a door? The answer is - "when it's ajar'" of course!