If and when self-driving cars become a practical reality, you'll probably want something to do during your journeys besides chatting with passengers or checking your phone. Thankfully, Ford might have an answer. It recently obtained a patent for an "autonomous vehicle entertainment system" that would let you watch videos when you're hands-free. Kick your vehicle into self-driving mode and a projector system could swing into action, complete with its own screen -- yes, you could watch a movie while you're on the way to visit family. Think of it as in-flight entertainment, just grounded.