I modeled and animated this using the Dynamics in Cinema 4D. Needs some refinement you say? I agree!
I love Sputnik though. i don't think there's a single object that has embodied mystery more it. At least not anything that's real. I also love the design. Minimalist and Soviet. It's one of the real bits of (what we now call) retro-futurism that was real, and more or less faithfully represented in art. Everything else looked like a '57 Chevy.