Wing (Downforce)

//Provides downforce to the car, which helps reduce chances of car rolling.

using UnityEngine;
using System.Collections;

public class Wing : MonoBehaviour {

 Rigidbody body;
 public float liftCoefficient;
 void Start () {
 Transform trs = transform;
 while (trs != null && trs.GetComponent<Rigidbody>() == null)
 trs = trs.parent;

 if (trs != null)
 body = trs.GetComponent<Rigidbody>();

 void Update () {
 if (body != null) {

 float lift = liftCoefficient * body.velocity.sqrMagnitude;
 body.AddForceAtPosition(lift * -transform.up, transform.position);

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