What's the Future of Autonomous Cars and Air Taxies?

Geoffrey McElvoy's new book is about the emerging technologies of the future. He looks at how we will live in a world where cars, air taxies and super sonic jets are all possible. But he asks: What would it really be like to get into a hyper loop capsule with a couple o dozen other people? And if there's a crying baby next you, or you suddenly need to use a washroom or something like that, there won't be any services on board.