> The article is also a little cagey on how this "detection" happened. Was it a human spot checking cameras in vehicles? I doubt it. Most likely it was some sort of computer vision algorithm that flagged something. Perhaps a human was in the loop to verify and be the one to call the cops, but humans seem to be increasingly shutting off their brains and trusting the machine

I think there's a middle ground between those that's possible that you might not be considering.

A while back I was in a Waymo and someone I was with dropped one of their Airpods and it went under the seat. They took off their seatbelt to dig under the seat and the car started beeping since we were driving. After about a minute of that someone came over the speaker and asked what was going on and told him he needed to get up and put the seatbelt back on or Waymo would end the ride right there.

I'm sure these cars are full of other sensor based triggers like seat belts being taken off, doors being opened, people messing with the steering wheel, etc that alert a human to come take a look. I know that the cars have cameras and microphones and it wouldn't surprise me if they are or are planning to use that for monitoring the cars, but I also wouldn't be surprised if the people in the car just triggered some other unrelated sensor and then the human stepped in to review and noticed the gun.

The article says they violated the TOS relating to the firearm, but that doesn't mean that Waymo initially started looking at the car because of that. It's possible that they were looking at the vehicle for something much more inane initially, discovered the firearm by chance, and are now using that to ban them since it's the most obvious TOS violation.