Let's see, what can I find on youtube in a couple minutes of searching. In increasing order of wrongness:
https://www.youtube.com/watch?v=BLRRBHNjCn4 There's a car that it's reasonable to worry about, but it was clearly braking and almost stopped by the time AEB kicked in, and AEB kept going as that car went to zero.
I have been in a car where the alert went off that it was engaging aeb. The driver was far too close to the car in front of us...