It’s a recent development. First the LiDAR manufacturer leaked that they sold them to Tesla. Then several teslas had been spotted with LiDAR rigged on to their roofs. Then in a lawsuit an engineer admitted they’re training fsd with LiDAR
https://www.theverge.com/2024/5/7/24151497/tesla-lidar-luminar-elon-musk-sensor-autonomous
Opsgenie and PagerDuty let you add them as contacts from within the app and it manages the rotating numbers for you so you can keep using a specific ringtone for them. This is also how they can override DND so you can go back to muting your phone at night and know that pages will still come in.