Assuming it is $250k one time purchase, it seems cheaper than annual pay for a person to drive around SF, and the overhead to manage the person.

You still have overhead to manage your fleet of self driving cars. They aren't self repairing, self fueling, and self cleaning yet.

Cheaper than having individuals manage their own cars.

The Uber trick is that people don't understand how much it costs to own a car, so riders get to extract money from overinvested drivers.

Let’s assume you get a loan for 30 years on it for 6%. That is $18k a year. What is labor? $50k a year?