public void Init(VehicleEngine e)
        {
            engine = e;
            rigid  = engine.GetComponent <Rigidbody>();
            wheel.wheelDampingRate   = 0.25f;
            wheel.suspensionDistance = 0.2f;
            JointSpring js = new JointSpring();

            js.spring                   = 3f * rigid.mass;
            js.damper                   = 2f * rigid.mass;
            js.targetPosition           = 0.3f;
            wheel.suspensionSpring      = js;
            wheel.center                = new Vector3(0f, (1f - wheel.suspensionSpring.targetPosition) * wheel.suspensionDistance, 0f);
            wheel.forceAppPointDistance = 0.7f;
            wheel.steerAngle            = 0;
            wheel.brakeTorque           = 0;
            wheel.motorTorque           = 0;
            wheel.ConfigureVehicleSubsteps(1f, 20, 20);
        }
    void OnGUI()
    {
        if (GUI.Button(new Rect(50, 50, 100, 30), "Clear Monos"))
        {
            MonoBehaviour[] monos = creation_obj.GetComponentsInChildren <MonoBehaviour>(true);
            foreach (MonoBehaviour mono in monos)
            {
                if (mono is CreationMeshLoader)
                {
                    continue;
                }
                if (mono is VCMeshMgr)
                {
                    continue;
                }
                MonoBehaviour.Destroy(mono);
            }
            foreach (MonoBehaviour mono in monos)
            {
                if (mono is CreationMeshLoader)
                {
                    continue;
                }
                if (mono is VCMeshMgr)
                {
                    continue;
                }
                MonoBehaviour.Destroy(mono);
            }
        }
        if (GUI.Button(new Rect(50, 100, 100, 30), "Init Test"))
        {
            VehiclePhysics.VehicleEngine engine = creation_obj.AddComponent <VehiclePhysics.VehicleEngine>();
            creation_obj.AddComponent <VehiclePhysics.VehicleDemo>().engine = engine;

            WheelCollider[] wcs = creation_obj.GetComponentsInChildren <WheelCollider>();

            foreach (WheelCollider wc in wcs)
            {
                wc.enabled = true;
            }

            engine.wheels = new VehiclePhysics.VehicleWheel[wcs.Length];
            for (int i = 0; i < engine.wheels.Length; ++i)
            {
                engine.wheels[i]                    = new VehiclePhysics.VehicleWheel();
                engine.wheels[i].wheel              = wcs[i];
                engine.wheels[i].model              = wcs[i].transform.parent.GetChild(3);
                engine.wheels[i].maxMotorTorque     = 5000;
                engine.wheels[i].staticBrakeTorque  = 1200;
                engine.wheels[i].dynamicBrakeTorque = 400;
                engine.wheels[i].footBrakeTorque    = 6000;
                engine.wheels[i].handBrakeTorque    = 10000000;
            }
            engine.maxMotorTorque = 24000;
            engine.maxPower       = 3000;
            engine.realMass       = 15000;

            Transform[] ts = creation_obj.GetComponentsInChildren <Transform>(true);
            foreach (Transform t in ts)
            {
                if (t.gameObject.name == "MCollider")
                {
                    GameObject.Destroy(t.gameObject);
                }
            }

            creation_obj.GetComponent <Rigidbody>().mass        = 15000;
            creation_obj.GetComponent <Rigidbody>().isKinematic = false;
        }
    }