Red
The photograph is called "Pink Merc", so I assume that the vehicle is the subject here. I am , however, drawn into the back corner of the two walls and also the 44 gallon drums. I find nothing appealing or thought-provoking there. Sorry!
That type of subject matter (i.e. junk) is not appealing to me. I think it was Alain Briot who said that he decided early on in his career not to photograph ugliness. That resonated with me and so it is with that in mind that photographs appeal to me, or not.
I have learned on this forum not to second-guess the photographer by offering opinions on how one thinks the photo should have been taken - something else that makes sense to me, so I won't.
This is not the type of photography I do nor am I that interested in, therefore, take what I say from whence it comes.
William