Waymo at airports could work really well with automatic dispatching. They already have an app running in the customer's phone. It should be aware of when someone with a reservation gets off an airplane, and how close they're getting to the pickup point. With good coordination, as the customer heads to the arrival lanes, a Waymo pulls out of short-term parking and heads for the meeting point.

A few more years, and humanoid robots will put the luggage in the trunk.