Real time AR navigation using vuforia

Hey guys,

So I'm working on a NavSystem project, currently i'm able to create a map using Google Maps API and get a navigation from a point to another and draw the route line on the map. The next step will be Drawing the route using Vuforia ground plane detection. I've looked everywhere for a lead on how to start but i got no luck so i guess this thread will be a solution for many developers to trying the same approach :D.

Any idea from where to start ? , I can't share my code because it has payed plugins. But I'm open to have a chat about the system.