AEB is great, and I'm super happy that it's going to be standard, but its not going to totally eliminate the rear-ending problem. From wikipedia [1]:

> Forward collision warning plus autobrake is associated to a 50% decrease in front to rear crashes.

Similar stats are reported from around the world.

Low friction surfaces, weird car angles, poor radar/camera visibility and too high entry speed all mean the system isn't going to be 100% effective.

[1] https://en.wikipedia.org/wiki/Collision_avoidance_system