The autonomous vehicle, or self-driving car, has become the focus of the automotive world. More and more, you hear that the connected car is the answer to a variety of transportation ills. From Google to Volvo to Ford to Uber and Lyft, the industry of moving you from one place to another is working feverishly to make the once science fiction dream of a driverless vehicle a reality. However, this seemingly 21st century innovation has not only been in people’s minds for centuries, but attempts and working prototypes have been pursued across the ages. What exactly is an autonomous vehicle?