Elon Musk
Tesla CEO Elon Musk
  • Elon Musk told his biographer that he's "not Trump's fan."
  • Musk, according to Walter Isaacson's new book, also called the former president "the world champion of bullshit."
  • According to Isaacson, Musk approached Trump's election with cautious optimism that later vanished.

Elon Musk told his biographer that he was no fan of Donald Trump after it became clear after his election that the wild statements he gave during the 2016 presidential election were not act.

"Trump might be one of the world's best bullshitters," Musk told Walter Isaacson, according to Isaacson's "Elon Musk." "Like my dad. Bullshitting can sometimes baffle the brain. If you just think of Trump as a sort of con-man performance, then his behavior makes sense."