Help with Basic Movement Script

Hi, i’m a beginner on unity3d and I followed a tutorial to make an easy game I make my “car” on unity and make this javascript:

var forwardSpeed : float = 3;
var turnSpeed : float = 2;

function Update()
{
//this is the forward speed that will actually happen
var forwardMoveAmount = Input.GetAxis(“Vertical”)*forwardSpeed;

//actual turn amount
var turnAmount = Input.GetAxis(“Horizontal”)*turnSpeed;

transform.Rotate(0,turnAmount,0);
}

but the car only rotates (with the side arrows)… I want the car to move forward and backward with the other arrows… could you help me plz? I attach you a photo of the model I don’t know if it can be the problem…
http://img4.imageshack.us/img4/83/moversefototodo.jpg

PD : do you know if I can add rigid body and will work too?

You are calculating how quickly you would like the car to move, but you aren’t actually applying the movement to the object. You could try something like this:

var forwardSpeed : float = 3; 
var turnSpeed : float = 2;

function Update() { 
  //this is the forward speed that will actually happen 
  var forwardMoveAmount = Input.GetAxis("Vertical")*forwardSpeed;

  //actual turn amount 
  var turnAmount = Input.GetAxis("Horizontal")*turnSpeed;

  transform.Rotate(0,turnAmount,0); 

  transform.position += transform.forward * forwardMoveAmount * Time.deltaTime;
}

P.S. Sure you can add a rigidbody to the car object!