We exhibited a diorama representing Hyundai Rotem's hydrogen society at the Busan International Railway Technology Exhibition held from June 18 to 21, 2025. Kleines Wunderland created this diorama depicting Hyundai Rotem's hydrogen-powered society and collaborated by managing and operating it at the Hyundai Rotem booth. The diorama featured trains, autonomous vehicles, and trams running via automated control, providing a rich visual experience for visitors.