[xnx]

Waymo's have interior cameras on their vehicles. Any rider that leaves mess will get a strike and probably be banned for repeated infractions. You're right, some problems will only be noticed by the next rider.

[PlunderBunny]

Does Waymo's app give you the ability to cancel a trip before the trip start, with no penalty?

[xnx]

Yes. I haven't had to do this myself, but I just read someones account of doing just that (because of delay, not mess).

[AStonesThrow]

Cancellation fees may apply, especially if you do it late, or you're a no-show.

If you purchase a GoPass, you'll receive a 10% discount on all rides, and 5 free cancellations.

[dzhiurgis]

Ahhh yes and your google account deleted for using hate speech while riding?

Or will you ever be able to reach support once car takes you to wrong location?

[xnx]

The microphones inside the vehicle are only activated when you contact rider support. Maybe the cameras can do HAL-style lipreading...