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This article introduces user experience research that has been carried out by evaluating a video-illustrated science fiction prototype with process control workers. Essentially, the prototype 'A remote operator's day in a future control center in 2025' was aimed at discovering opportunities for new interaction methods and ambient intelligence for the factories of the future. The theoretical objective was to carry out experience design research, which was based on explicit ambient user experience goals in the nominated industrial work context. This article describes the complete creative prototyping process, starting from the initial user research that included evaluations of current work practices, technological trend studies and co-design workshops, and concluding with user research that assessed the final design outcome, the science fiction prototype. The main contribution of the article is on the ambient user experience goals, the creation process of the video-illustrated science fiction prototype, and on the reflection of how the experience-driven prototype was evaluated in two research setups: as video sequences embedded in a Web survey, and as interviews carried out with expert process control workers. For the science fiction prototyping process, the contribution demonstrates how the method may employ video-illustration as a means for future-oriented user experience research, and how complementary user-centered methods may be used to validate the results.