I love almost all of it - the lighting is excellent and so is the posing and overall 'feeling' of the image but the characters don't seem like the focal point and my eye keeps getting drawn away from them to the burnt-out car.
Too much went into setting that up to have the focal point drift away.
But.
Its a book cover... so, methinks if you fold it like a dust jacket would be for a book, then the car will be on the "back" of the book and the robot battle on the front.