Cars are convenient. They have been at the pinnacle of the mobility revolution of the past decades. And, yet, they are also extremely inefficient and wasteful. In Europe, the average car is parked 92 percent of the time—often on valuable land in cities that could very well be used for other purposes. And when a car is used, only 1.5 of its 5 seats are occupied. The driverless car will drastically improve the efficiency of mobility: 5 steps to replace the private car with something better.