I thought it was a Tesla that somehow completely failed to see a pedestrian and then to stop when it made contact, which would have terrible implications for the rest of the fleet.
Not really, this means there is a whole bunch of cars like this already in the wild and people being unaware of this.
I would guess this car has had some kind of aftermarket fiddling...
They pushed the car away from the kid, did they just let it roll back up on him? I doubt it, it's more likely the vehicle was in gear.
I don't mean to downplay the seriousness of this bug, I'm just saying it doesn't have as catastrophic implications as it would if this happened in a state-of-the-art Tesla.
There are approximately 250e6 registered vehicles in the US, so if all the Tesla-related fatalities are those "3 per year" (which seems unlikely to me; it assumes that there are no Teslas involved in fatal accidents when the automatic driving stuff is not engaged) to be disproportionate there would have to be only ~21000 Teslas on the roads. There are close to an order of magnitude more than that at this point.
This site seems to be an interesting aggregation of Tesla deaths: https://www.tesladeaths.com/ It claims 29 deaths in the US from Teslas in 2019; 3 are from accidents where auto pilot use was claimed.