It's a self driving taxi startup. It doesn't drive itself reliablh. It relies on call center workers in the global south to take control of the cars when they run into trouble. They already have killed several people and are programmed to only avoid specific objects they identify, if they identify you as 'other' they'll just run you over (yes this has already happened)

Anyway, paying a bus driver and building rail infrastructure is completely unthinkable and inefficient dontcha know?