I'm not the first to think of this idea, but in my series of essays on self driving cars I thought it would be worth discussing some ideas on suspension.
Driven cars need to have a modestly tight suspension. The driver needs to feel the road. An AI driven car doesn't need that, so the suspension can be tuned for the maximum comfort of the passengers. You can start bu just making it much softer than a driver would like, but you can go further.