Elon Musk should be ashamed of himself. He libeled a diver working to save children’s lives, calling him a “pedo” (without cause) — all because the man didn’t think the Tesla founder’s submarine could safely save kids trapped in an underwater cave. Worry about making better cars first. My friend’s Tesla caught on fire the other day, and I gave mine back and will never get another one. Silicon Valley billionaires suffer from chronic hubris: They think they’re infallible and that they can say whatever they want. We need to put the brakes on such lunacy.