Elon resume well situation: “Every time someone says they have a breakthrough battery I say, ‘Great, send us a sample,’ ” Tesla’s Musk says. “But they never do, or they do and it turns out to be false claims.”

Battery is a slow evolving technology and lithium ion as we know it is there for long, solid-state is not for tomorrow, lithium air will probably never materialize for transportation ... but every morning there's a scoop in the field.