The torque sensor was in there from the beginning, and it was actually an MB part as the Model S used a few parts from the MB.
The first "getting in the back seat" videos weren't from Tesla vehicles at all. It's funny how people keep thinking they only started when Tesla AP1 came around.
WK057 (a user on TMC) was actually the first person in a Tesla to do the "in the back seat" thing. He got the idea from other youtube videos out there with other cars. I think it was actually an Infinity that was his inspiration if memory serves correct.
In any case he was the first, and did so in a very safe/sane manner. It wasn't some idiotic thing, but just to prove it could be done. After those videos Tesla got the bright idea to use the seat sensor to prevent that. Of course people could just put weight down on the seat.
Tesla didn't change the behavior of the torque sensor until the first fatality AP related accidents happened in the US.
They went away from a "confidence" based warning to timed nags (that are also speed limited related).
Blader can't provide any statistics because no one other than Tesla keeps them.
Even adaptive cruise control can kill a person if a person doesn't understand that a radar based ADAS system can't always see stopped objects. There is absolutely no way that people haven't died while using adaptive cruise control (which counts at a SAE L1 system). All a person has to do is look away at the wrong time. The average person that is going to txt while driving will use anything the car has as a way to buy time to send that txt.
If they have an adaptive cruise control system they'll use that.
If they have a L2 system they'll use that
If they have to have a hand on the steering wheel then they'll have one hand on the steering wheel while they txt.
When it comes to texting the steering wheel nag doesn't really matter.
The only GOOD way of implementing an ADAS system is how Cadillac did it. I don't think there is any disagreement on that one. No one wants the stupid nag anymore.
Eye Tracking is the only way to save the texters from themselves, and to deal with people who fall asleep while driving.
There are some specific things about Tesla.
You can simply drive wicked fast. This is the number one killer when it comes to Tesla. It's getting to the point where it's every month while we stand around talking about one AP death every year or two.
The AP system is good enough to trick you into trusting it. Then it throw you into a gore point and straight for a divider.
It won't geofence anything so its not going to protect stupid people from themselves
The Model S/X are especially quite and smooth. I don't fall asleep when I drive, but all my passengers are sound asleep even after only 30 min. Or maybe it's because I'm really boring.
But, there is also one important thing that isn't unique to Tesla.
There is a loss of situational awareness when driving any L2 system. This can lead to accidents because the user is unprepared mentally to take over. Part of why I stopped using AP was because of this. Nothing about the nag system will impact that. It's simply a weakness I discovered in myself (that some others have as well). I proved to myself that I was a worse driver with AP because my reaction time to debris on the road was worse with AP than without. When L2/L3 cars have Lidar, rear corner radars, and some other tech then I'll use L2/L3 technology a lot more. Until then it's just something to play with.