private var forwardSpeed:double;
var maxForwardSpeed:double = 50;

private var rotationSpeed:double;
var maxRotationSpeed:double = 2;

function Update () {
	
	
	if( Input.GetAxis("Vertical") != 0 ) {
		forwardSpeed = maxForwardSpeed;
		var move:Vector3 = transform.forward * forwardSpeed * Input.GetAxis("Vertical") * Time.deltaTime;
		transform.Translate(move, Space.World);
	}
	
	if( Input.GetAxis("Horizontal") != 0 ) {
		rotationSpeed = maxRotationSpeed;
		rotationSpeed *= Input.GetAxis("Horizontal");
		transform.Rotate(Vector3.up, rotationSpeed);
	}
}