Trigger not detecting tag

When a car passes though the trigger only my one should debug but the other cars with different tags debug and i do not know why? here is my script

#pragma strict
var Lap: int;
function Start () {
	Lap = 0;

function Update () {
	if (Lap ==3);	

function OnTriggerExit(other : Collider)
 if(other.tag == "Player");
	Debug.Log("Passed though");

Your script looks fine. Check the children of the other cars. I am guessing one of them is tagged Player.