If Elon decreed that the Tesla iPad would now also give the driver, say, a prediction market gambling feature or X-rated AI chatbot or something, there’s nothing any government would do to stop him*, because after all he is a visionary genius and was a trillionaire and you can’t argue with the invisible hand of the free market.

* the US and UK would wave it through, because you can’t hold up the inevitability of the future. The EU would grumble, though might fold under the threat of tariffs.