The most complicated scenario, imho, is getting on and off a car ferry. Dark. Wet. Pedestrians. Dogs. No sidewalks. Flashing lights and lots of signs, most of which have nothing to do with car traffic. Lines on the road which you ignore in favor of following hand gestures. Then dramatic up/down ramps followed by parking way too close to other cars. And it is all in a metal box where GPS fails and internal systems are thrown off by ship movements.