Biographer Walter Isaacson and others close to Musk have previously described Musk’s periods of extreme productivity—and extreme temper—as “demon mode.”

Boeing has lost more than $2 billion producing the Next Air Force One after President Donald Trump renegotiated the deal in his first term.

Tesla CEO and Trump’s number one lil’ guy, Elon Musk, wants to know why i t’s taking Boeing so long to convert two 747s into the next Air Force One jets. He stopped by operations for his competitor earlier this week to see what’s what.