private void FixedUpdate() { if (controlledCar != null) { if (Input.GetKey(KeyCode.W)) { controlledCar.Forward(); } if (Input.GetKey(KeyCode.S)) { controlledCar.Backward(); } if (Input.GetKey(KeyCode.A)) { controlledCar.Left(); } if (Input.GetKey(KeyCode.D)) { controlledCar.Right(); } } }