That will be nice, but it's still not a sufficient trade-off for duration in your day, unless your time spent in the autonomous car counts as part of your work day. I liked the idea of taking the train into the city instead of driving to my current job, partially because I had this fantasy about how I would be able to use my time on the train productively, as opposed to just driving.

But, the thing is, the train trip into the city is 1 hour, and the drive is 30 minutes. And the train schedule is dictated by people who work 8 hours in the office; taking an off-schedule train is a much worse proposition. So even though I gain the time on the train (which is probably not as valuable as I think it is) I still lose out on the rest of my life for having 1 hour less per day to spend completely electively.

So, yeah, I'd like it if my car drove me into work so I was free to do other things. But I would still value a 30 minute autonomous drive much more highly than a 1 hour autonomous drive.