Hyundai Rotem unveils hydrogen-electric tram in South Korea April 20, 2021 | Asia Pacific Company News South Korea-based Hyundai Rotem has unveiled a hydrogen–electric tram for a pilot in Busan. The tram can cover a distance of over 150 km in a single charge and can operate at a maximum speed of ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password