Car rentals are fairly expensive. People tend to take better care of things they've put a lot into. Case in point, rental cars tend to be in much better conditi

Car rentals are fairly expensive. People tend to take better care of things they've put a lot into. Case in point, rental cars tend to be in much better condition than the back seats of taxis, which in turn are in better shape than the back seats of buses. I think people's concern is that single rides in self-driving cars might even rank below buses.