We are an ambulance company and we have a dashboard that tracks vehicles using AVL data. Our feed gives current location and destination location, and shows the ambulance tracking on the map. But we aren't even sure if getting an updating ETA (Estimated Time of Arrival) is possible. I've searched on Network Analyst and while I can do this on a static point to point, but continuous updating doesn't appear to be offered. I was just wondering if anyone had solved this issue before.