Prefab instantiate the second time and script are missing

is the prefab fine or is it missing scripts?

prefab is instatiate fine, but on the game manager the script is missing, after destroy. I will try to found it after instantiate the second time but doens't work.

  public void testme()
     {
        Supercars =  Instantiate (car, new Vector3(-40, -14, -17), Quaternion.Euler(0, 90, 0));
         Supercars.name = "Car03";
         WC = GameObject.FindGameObjectWithTag("Respawn").GetComponent<VehicleBehaviour.WheelVehicle>();
         car = GameObject.FindGameObjectWithTag("Respawn");
 
         F$$anonymous$$.inizia();
 
     }

are you linking the prefab in folder to the manager prefab in folder and not in scene?