I've seen other pictures of this type of wrecks before.Where the top bows appear to be missing I would guess that the rescuers ripped the top off and kicked out the bows to get in to help or get somebody out.With just that picture we can't know if that car was on it's side,laid up against another vehicle or building,or squeezed between another building.I think if it was torn off from rolling over it would be a lot more abraded than it is.These pictures can really make your brain work if you study on them.