> This honestly seems pretty ideal.

I disagree. A decent response would have been for the car to simply refuse to continue the ride rather than kidnapping the ne'er-do-wells.

That Waymo did this means that the hesitations I had about using the service are amplified by a few orders of magnitude. I'm not willing to risk someone at Waymo (or, worse, a machine at Waymo) making the wrong call and kidnapping me by mistake.