error CS0019: Operator `>' cannot be applied to operands of type `UnityEngine.Vector3' and `int'

Hello everyone!I am troubled with a script i get an error message error CS0019: Operator >' cannot be applied to operands of type UnityEngine.Vector3' and `int' Here is the script!Please help me!It is C#

using UnityEngine; using System.Collections;

public class AirWing : MonoBehaviour {

 public GameObject    Wing;
 public GameObject CarObject;
 void Start(){
     Wing.SetActive(false);
     Update();
 }

void Update(){

     if(CarObject.rigidbody.velocity > 1){
         Wing.SetActive(true);
     }
 }

}