elon musk the world’s wealthiest person began his sunday sparring with us senator bernie sanders who tweeted a day earlier that “we must demand that the extremely wealthy pay their fair share” musk even raised the notion of selling more of his tesla inc shares which would require him to pay taxes on the gains “i keep forgetting that you’re still alive” musk the chief executive officer of tesla and spacex tweeted in a reply to the 80yearold senator from vermont in a subsequent tweet musk asked “want me to sell more stock bernie just say the word…”