I was pretty curious as I have a kid who's not very aware about cars. That appears to be an extrapolation from a pretty biased source [1]. It's probably more honest to say "the aforementioned systems are expected to save 58 to 69 lives each year" after they are fully rolled out to the entire fleet.

That's not counting injuries or property damage, but it is still an already low number

[1] https://www.kidsandcars.org/news/backup-camera-mandate-linke...

[2] https://www.federalregister.gov/documents/2014/04/07/2014-07...