I don't know. It looks more aesthetically consistent. Your computer has to display something. Average users would be scared if it dumped logs on the display. so the vendor logo makes sense. It COULD just say loading, but this is a bit pedantic I think.
I mean if the fact that a failed update diables your car, would be open and easily auditable from day one, would that knowlage change your decision of buying this car, as opposed to the other ones?