The traditional Japanese ryokan. Calm. Soothing. Hospitable. And full of shoes that move around by themselves. At least, that’s the impression created by Nissan, who in a previous stunt allowed chairs to tuck themselves under a meeting room desk. This time, visitors to a ryokan guesthouse are stunned as sandals tidy themselves into neat rows and cushions square up to a table as if pushed by invisible hands. In fact the phenomenon is a promotion for Nissan’s ProPilot “auto parking” technology. The combination of tradition and science fiction left guests beside themselves.