Not bad at all. I'd still play with the tex just a little. This will probably work the way you seem to be doing it -- fast crosses with motion blur, etc. But I'd love to see it done up "hero" style with dirt and oil stains, peeling posters, transmap for all that dirt and grease on the windows, and spec map to show where the body gets hand-rubbed smooth, scratched to bare metal, etc. Oh. Wonder what this would look like if you stitched a panorama of the actual area and used it as HDRI?