Agreed. With self-driven cars, you can imagine scenarios like hand-offs, where you ferry multiple passengers at a discounted rate over a common leg of a trip,

Agreed. With self-driven cars, you can imagine scenarios like hand-offs, where you ferry multiple passengers at a discounted rate over a common leg of a trip, and then they transfer to separate cars to go the last leg of their journey to their separate destinations, also possibly sharing with other passengers interested in only that leg, who might also be transferring onto new cars to get to their ultimate destination. You can basically specify your tolerance (100ft to 1mi) for walking and thus allow even steeper discounts and more travel options for the self-driving cars. You can hit occupancy and distance-traveled efficiency with this that we've never come close to before, and if the pricing is sexy enough by comparison (and it should be), it's going to be the option most people use, because most people can barely pay their bills. They will still be saving time over waiting on bus transfers, which are incredibly slow by comparison.