Details are emerging from former FBI Director James Comey's book. It's not out until early next week, but it's already making waves. In "A Higher Loyalty," Comey compares President Trump to a mob boss. President Trump took to Twitter on Friday to discredit Comey. Tesla CEO Elon Musk also took to Twitter to refute an article in The Economist claiming that the company is cash-strapped. Meanwhile, Tesla is embroiled in a battle with the National Transportation Safety Board over the investigation of a fatal crash involving a Model X vehicle in California.