Get Script Component In Parent

I have two scripts. One is attached to a trigger, "DestroyTruck", and the other is attached to the Camera Rig, "PlayerAudio". The truck is a child of the Camera Rig, and is destroyed by the script when it enters the trigger. In the script attached to the trigger, I am trying to access the "PlayerAudio" script attached to the truck's parent Camera Rig, and change a public variable in that script. When I try to get the script component of the parent, I get this error.

"Assets/Resources/DestroyTruck.cs(6,87): error CS1729: The type 'PlayerAudio' does not contain a constructor that takes '1' arguments"

DestroyTruck.cs

 public class DestroyTruck : MonoBehaviour {
     void OnTriggerEnter (Collider other){
         PlayerAudio Intro = new PlayerAudio(GetComponentInParent<PlayerAudio>);
         Intro.WorkClip = 0;
         Destroy (other.gameObject);
         Destroy (this);
     }
 }

PlayerAudio.cs

 public class PlayerAudio : MonoBehaviour {
     AudioSource audio;
     public AudioClip[] ClipsWait, ClipsWork;
     public double CurrX, CurrY, CurrZ;
     public int WaitTime, WaitClip, WorkClip;
 
     void Start () {
         audio = GetComponent<AudioSource>();
         ClipsWait = new AudioClip[]{(AudioClip)Resources.Load("AudioClips/Hey Get Back To Work"),(AudioClip)Resources.Load("AudioClips/Get To Work Recruit"),(AudioClip)Resources.Load("AudioClips/Get To Work"),(AudioClip)Resources.Load("AudioClips/Hey Are You There")};
         ClipsWork = new AudioClip[]{(AudioClip)Resources.Load("AudioClips/Intro")};
         CurrX = this.gameObject.transform.position.x;
         CurrY = this.gameObject.transform.position.y;
         CurrZ = this.gameObject.transform.position.z;
         WaitTime = 0;
         WaitClip = 0;
         WorkClip = -1;
     }
 
     void Update () {
         if (CurrX == this.gameObject.transform.position.x && CurrY == this.gameObject.transform.position.y && CurrZ == this.gameObject.transform.position.z) {
             WaitTime++;
             if (WaitTime >= 1800) {
                 audio.clip = ClipsWait[WaitClip];
                 audio.Play();
                 WaitTime = 0;
                 if (WaitClip < 3) {
                     WaitClip++;
                 } else {
                     WaitClip = 0;
                 }
             }
         } else {
             CurrX = this.gameObject.transform.position.x;
             CurrY = this.gameObject.transform.position.y;
             CurrZ = this.gameObject.transform.position.z;
             WaitTime = 0;
         }
 
         if (WorkClip != -1) {
             audio.clip = ClipsWork[WorkClip];
             audio.Play();
             WorkClip = -1;
         }
     }
 }

Why does the line,

 PlayerAudio Intro = new PlayerAudio(GetComponentInParent<PlayerAudio>);

cause an error, and what do I need to do in order to properly access that script.