If you intend to pursue this, I'd give the buildings an overall drab grey and dirty color, and hang some thicker cloud above, so the craft stands out. Or have low light through mist in town (receive shadows from objects), and add a (or some) spotlight(s) onto the craft, maybe from down below.
The shine is off the vehicle, is that on purpose?
Also, haul the city trhough Poseray and weld and recalculate normals (default 35 degrees will probably be fine); on the left some polys are very visible.