The point being that:
a) it isn't unusual and
b) that it isn't sinister in intent.... unless some agency decides to stoke the fires of paranoia.
That's the trouble with having a good grasp on the history of the late 20th century - you get to...
Hmmm.... A remotely triggered 'kill switch' that cripples a bus or truck and renders it useless.... that is a huge worry and could cause chaos.
So why doesn't anyone turn a hair with exactly the same system built into Tesla cars? Could it be...