Do those statements somehow express the narcissism? They seem like some kind of babyish, strictly observational statements. "Car!" etc. If there's a connection I'm not seeing it.
They are "babyish", and that's the point. Very crudely, narcissism can be defined by saying that the narcissist's consciousness stops growing (like neuronormal people's do) at around the mental age of six. As you may know, six-years-olds are very selfish, empathetically-bankrupt (yet, for neuronormal people) and prone to tantrums because their ego is yet bigger than other, inhibiting parts of personality. They'll yell out things they see that they deem partly important because they sincerely believe that it's only them who noticed it so far. Now, imagine an adult woman doing that for three hours while having no control over the steering wheel or any other part of an automobile she rides.