There is noticeably nothing as Elon is interested on dogecoin and so on. He just makes some predicted and tries to make the market manipulated. He gave a try and it responded well. Recently he once again mentioned baby doge, but the time the market isn't affected much by his tweet. It is all about the panic that gets created relative to his words. Maybe tomorrow he can make a statement on a coin without much of volume.
He tweeted about Dogecoin multiple times and as a result the market cap of that particular cryptocurrency increased by a lot. Elon Musk is the second richest person in this planet, and obviously millions of people follow him. When he tweets about a particular asset, it is only natural for it to witness an increase in demand. And if tomorrow Elon comes up with his on coin, then I have no doubt that it will manage to be on the top-10 list in coinmarketcap. He still commands a lot of influence in this sector.