public void OnTriggerExit(Collider other)
 {
     if (other.GetComponent <CarAnimation>() == NearestCar)
     {
         NearestCar = null;
     }
 }
 public void OnTriggerEnter(Collider other)
 {
     if (NearestCar == null && other.GetComponent <CarAnimation>() != null)
     {
         NearestCar = other.GetComponent <CarAnimation>();
     }
 }