It could be incorporated into GPS turn-by-turn directions on mobile phones and dedicated GPSs. Think about it, you request a route to some place, and the GPS p

It could be incorporated into GPS turn-by-turn directions on mobile phones and dedicated GPSs. Think about it, you request a route to some place, and the GPS prompts you with several route options. Some routes could very easily be incentivized. Thinking about how Apple plans to update transit times and traffic estimates makes this almost seem to come as a natural extension. But by the same token, it enables the scary thought of your GPS charging you extra for taking some routes!