It's 100% true that all the benefits of self-driving cars will be for naught if there's no congestion pricing implemented for driving alone. This will be either

It's 100% true that all the benefits of self-driving cars will be for naught if there's no congestion pricing implemented for driving alone. This will be either in the form of a toll or tax, or by making all but one of the freeway lanes shared-ride only. Once you've implemented congestion pricing, riding with others is what 99% of people will be doing and the stigma is gone. If you don't want to ride in a car with graffiti etc. there'll be an option to order a better quality of ride.