Everyone’s talking about a future in which vehicles are shared rather than owned, autonomous rather than driven, and where car companies make large shares of their profits on digital “mobility services.” But if you are the Ford Motor Company and face the prospect of investing billions in new technology while your century-old business model is overturned, you might first have a few questions. How are consumers going to react to all of this? What do they really want? How can you tell which opportunities are real and which are science fiction?