I'll give you "lives" and "money," but not necessarily time.

I live in a place where self-driving vehicles can be spotted fairly regularly. Once a week or so. You can tell by the special license plates. They are always very ponderous, careful drivers. It's fascinating to see them gently slow to a stop for a red light, then take off like a jackrabbit when it turns green.

Perhaps as the technology matures, they'll start to keep pace with traffic better.

I'm actually looking forward to self-driving cars. It's all the personal time benefits of mass transit (book reading, meditating, general mental health), without worrying about accidentally sitting in someone else's pee.