Is this perhaps a hint that Doge will be pumped? We know Doge can only be moved by Elon Musk as his father so by accepting Doge as a Tesla car purchase like he will start the preparation.
I am not sure if this will happen because Doge is a meme that is constantly being moved by influential people he may try to manipulate in bullish times but Elon Musk already understands that it is now time for hype, remember doge holders will expect Elon Musk to continue talking about Doge in his tweets.