CNBC's Jim Cramer made the case for owning Tesla stock, saying it's worthwhile not because President-elect Donald Trump reportedly wants to relax U.S. self-driving rules, but because of CEO Elon Musk himself."While I don't buy the national self-driving mandate, I think nothing truly dulls the case for owning Tesla," he said. "The Musk premium will work its magic in other ways, perhaps favorable municipalities and Tesla rentals next to federal highways."The electric vehicle stock jumped on Monday, up 5.62% b ...