make a self-driving car, combine Navimesh and waypoint?

Hi! I’m making a self-driving car game in 3D, I have made the city in scene, the car I use the default vehicle asset package from Unity5. My goal is when I pick a destination in the city the car can find the shortest path and drive to it. I plan to use waypoints to keep the car drive on one side of the road, I’m not going to use A* since it’s not ideal for car game, now I’m confused can I combine Navimesh and waypoint to navigate the car? If possible can someone drop an example how to combine?

Hi,
there is a useful script here for waypoints here:
http://forum.unity3d.com/threads/cant-make-a-simple-patrol-waypoint.272336/
does that help?