Ashlee Vance is a journalist and author who has written extensively about technology and innovation. His most well-known work is the 2015 book 'Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future', an unofficial biography of the influential entrepreneur Elon Musk. The book provides an in-depth look at Musk's life and career, from his early days as a computer programmer to his leadership of companies like Tesla and SpaceX. Vance's biography was praised for its detailed reporting and insightful analysis of Musk's ambitious vision and disruptive approach to business.