Prefab to automatically follow a waypoint path?

I have a car game object with scripts that move it along a path. It works great exactly how I want it to work.

I then turn it into a prefab to spawn at a certain point on a road. I made a game controller to instantiate the prefab. It works and the car spawns where I want it to......but doesn't move along the path. It just sits there.

When I first wrote the scripts for the game object I made it so that I had to manually drag the waypoint path object to a public variable for it to follow. And I assumed that when I made the car into a prefab it kept that variable when it spawns. It doesn't.

So my question is how do I get my spawned car to automatically find the path to follow and actually follow?

Here is my initial code for moving the car on the path:

 using UnityEngine;
 using System.Collections;
 
 public class moveOnPath : MonoBehaviour
 {
 
     public waypointPath PathToFollow;
 
     public int CurrentWayPointID;
     public float speed;
     public float reachDistance;
     public float rotationSpeed;
     public string pathName;
 
     Vector3 last_position;
     Vector3 current_position;
 
 
  
 
     void Start()
     {
         PathToFollow = GameObject.Find(pathName).GetComponent<waypointPath>();
         last_position = transform.position;
     }
 
 
     void Update()
     {
         float distance = Vector3.Distance(PathToFollow.nodes[CurrentWayPointID].position, transform.position);
         transform.position = Vector3.MoveTowards(transform.position, PathToFollow.nodes[CurrentWayPointID].position, Time.deltaTime * speed);
 
         var rotation = Quaternion.LookRotation(PathToFollow.nodes[CurrentWayPointID].position - transform.position);
         transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * rotationSpeed);
 
         if (distance <= reachDistance)
         {
             CurrentWayPointID++;
         }
 
         if (CurrentWayPointID >= PathToFollow.nodes.Count)
         {
             CurrentWayPointID = 0;
         }
     }
 }

And here is the code for the path:

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class Path : MonoBehaviour {
 
     public Color lineColor;
 
     public List<Transform> nodes = new List<Transform>();
 
 
    
     
     void OnDrawGizmosSelected()
     {
         Gizmos.color = lineColor;
 
         Transform[] pathTransforms = GetComponentsInChildren<Transform>();
         nodes = new List<Transform>();
 
         for(int i = 0; i < pathTransforms.Length; i++)
         {
             if(pathTransforms[i] != transform)
             {
                 nodes.Add(pathTransforms[i]);
             }
         }
 
         for(int i = 0; i < nodes.Count; i++)
         {
             Vector3 currentNode = nodes[i].position;
             Vector3 previousNode = Vector3.zero;
 
             if (i > 0)
             {
                 previousNode = nodes[i - 1].position;
             }
 
             else if(i == 0 && nodes.Count > 1)
             {
                 previousNode = nodes[nodes.Count - 1].position;
             }
 
             Gizmos.DrawLine(previousNode, currentNode);
             Gizmos.DrawWireSphere(currentNode, 0.3f);
         }
 
 
     }
 
 
 }