Hyundai Motor has launched a mobile application for drivers and buyers of its commercial vehicles in an effort to boost digital communication and services, the auto giant said Wednesday. The Hyundai Truck & Bus Service app will offer the latest technology information on its vehicles, quick guidelines on their features and other content that can help customers with driving. It will also have functions enabling them to reserve time for maintenance and call for rapid deployment of Hyundai's on-field after-sales services.