No idea what the Waymo car was thinking, but what are these kids riding?
Maybe it thought they were on a bike lane? Where I'm from it's illegal to ride like that in a group outside of police-sanctioned events - you're supposed to ride one after the other and keep right.
Maybe it thought they were on a bike lane? Where I'm from it's illegal to ride like that in a group outside of police-sanctioned events - you're supposed to ride one after the other and keep right.