Unity Traffic Spawner

trafficSpawner.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class TrafficController : MonoBehaviour {

    public GameObject Car;
    public GameObject CarParent;
    private bool spawnLeft;
    private float[] lanes;
    private float[] laneSpeeds;
    private int carID;

    // Use this for initialization
    void Start () {
        lanes = new float[] { -3.0f, -1.0f, 1.0f, 2.0f, 3.0f };
        laneSpeeds = new float[] { 8.0f, 5.0f, 4.0f, 3.0f, 2.0f };

        vehicleSpawner();
		}
	
	// Update is called once per frame
	void Update () {
        
	}

    void vehicleSpawner()
    {
        GameObject newCar = Instantiate(Car);

        newCar.name = "_car_ (" + carID+ ")";
        
        newCar.transform.parent = CarParent.transform;
        SingleCarController scc = newCar.GetComponent<SingleCarController>();
        
        scc.startX = -7.6f;
        scc.targetX = scc.startX * -1.0f;
        
        int chosenLane = (int)Random.Range(0, 5);

        scc.startZ = lanes[chosenLane];
        scc.speedMultiplikator = laneSpeeds[chosenLane];

        carID += 1;
        Invoke("vehicleSpawner", Random.Range(0.4f, 0.9f));
    }
}