I've looked at the documentation briefly but couldn't find information on step-by-step navigation based on a user's current GPS location. Is the even possible? If there isn't a direct api to do this, is it possible to get a response with the route's step by step directions with long/lat data for each step? From there I could determine the user's current location long/lat-wise and figure out where they are on the step-by-step navigation directions.
Thanks!