As self-driving cars move steadily toward real-life commercial service, the companies ripping away the steering wheel are dealing with problems far more complex than telling a highway sign from a stopped firetruck. Problems like how to keep making money in a world where people are losing interest in owning, renting, and even driving cars. And they're making moves that indicate they've got answers, or at least guesses. This week, General Motors announced it's taking a $2.35 billion investment from the Softbank Vision Fund, to help its self-driving venture get to market in 2019. Alex talked to the man trying to steer Avis into the future, and we looked at the idea of automotive subscriptions.