This is an amazing feature. You can choose to share your current location or the full route!
A clickbaity article title but an OP chad enough to actually tell us the feature in the body of the post.
Have a good day, OP, you deserve it.
I feel like you are coming off as sarcastic here, but I will take away the positive thanks!
Similar to sharing your ETA in Apple Maps, Check In will notify the recipients if you get lost, kidnapped or simply have a car breakdown. If you deviate or stop making progress on a trip, you have fifteen minutes to respond to a notification to confirm you’re all right.
Of course it wouldn’t actually know if you got lost, kidnapped, or had a breakdown, and it’s not capable of notifying anyone of those things.
I had someone coming to visit me a couple days ago. I asked them to use check in with my house as the destination so I could see how it worked. It gave me an expected arrival time of 5:50. Right before they got to my street, it extended the arrival time to 6:10. I did not receive a notification for this. I only know because I kept checking it. They arrived at 5:52. Had they been kidnapped, I assume the kidnapper would have had an 18 minute head start. This was my one and only experience with the feature.