Once cars are driverless, they become investment vehicles (pun unintended). One might buy a car, then lease it out by the mile/km, with certain times during the

Once cars are driverless, they become investment vehicles (pun unintended). One might buy a car, then lease it out by the mile/km, with certain times during the day that it has return to one's location to pick up (assuming the spot market makes it cheaper to call one's car back rather than just lease another one). So cars become an investment that is on average an order of magnitude less expensive than real estate.