South Korean officials have demonstrated a local air transportation service that could be launched in Seoul as early as 2025.The recent demonstration involved the country's urban air mobility (UAM) vehicles.The vehicles are designed to transport people between major airports and downtown Seoul.Officials say the taxi service is expected to cut travel time between the two places by about two-thirds.Last year, South Korea announced plans to launch urban air travel services by 2025.The transport ministry estimates such services would reduce travel time for distances between 30 and 50 kilometers from one hour by car to 20 minutes by air.Transport Minister Noh Hyeong-ouk attended the UAM air traffic demonstration.He said such vehicles are expected "to become one of the common means of transportation that citizens use in daily life."