Groundbreaking, hyperrealistic science fiction artwork, bird's eye view, panorama, (Colossus War Machines:1.4), towering, mechanized behemoths, colliding & clashing in an futuristic city skyscraper environment, sprawling metropolis, electric hues, LED billboards, neon advertising signs, night time, dense fog, dramatic lighting, motion blurs, weather effects. by: Moebius, Syd Mead. 
(Colossus War  Machines:1.4) collide in futuristic city skyscraper. 