The document summarizes Seoul's pilot transportation assistant program called Seoul PTA. The 3-sentence summary is: Seoul conducted a pilot program that integrated real-time traffic, public transit, bicycle, and walking information to provide multi-modal route guidance and carbon footprint calculations to downtown residents using a virtual assistant named Haechi. The future plans for Seoul PTA include fully integrating additional transportation data sources like parking across more devices and a wider service area, and integrating smart payment services like T-money with users' carbon mileage accrued from green transportation options.