Lynn Ware Peek speaks with author Hamish McKenzie, a journalist and former Tesla employee, about his new book, Insane Mode: How Elon Musk’s Tesla Sparked an Electric Revolution to End the Age of Oil. The title of the book, Insane Mode, refers to a dashboard button on an early model of Tesla’s Model S that accelerates the care from 0 to 60 mph in under four seconds, faster than a Ferrari. “Insane mode” could also sum up Musk’s unconventional leadership strategy.