Unity touch

I would like to know how to detect a long touch.

So far my code like this:

 var car : Rigidbody;
 
 var touchTime: float;
     
     if (Input.touchCount == 1){
     
         touchTime = Time.time;
         var touch = Input.touches[0];
             
         car.MovePosition(car.position + speed1up * Time.deltaTime);
                 
             if (Time.time-touchTime > 1){
                 
                 car.MoveRotation(rigidbody.rotation * deltaRotation);
             }
 }

Thanks!