Elon Musk uses Dogecoin to maximize his own interests, but he also knows that Dogecoin is not a sustainable cryptocurrency forever. Earlier, several of his fans reminded him that the supply of Dogecoin is unlimited. Elon told them he knew this, but I don't think he gave a satisfactory answer (https://www.youtube.com/watch?v=u_U_dOOI9us). I think the possibility of Elon leaving Dogecoin one day is very high. I don't think we can trust him.