While not quite as extensive as the place where Patrick McGoohan’s character was imprisoned in The Prisoner, automotive safety systems supplier, Autoliv, has created a small city in Vårgårda, Sweden, for the purposes of evaluating new systems. It has real streets, house facades, pedestrian simulators, real cars, and balloon cars. This allows the testing of various radar, laser, and vision sensors to be tested in a safe setting, one that’s comparatively real.