As a daily cyclist who has experienced many close calls over the years at the hands of inattentive, impatient, or unaware drivers, I would love to believe that this world is coming. But unless insurance companies can actually go to work on
predicting how accident-prone a person is based on this kind of data, and raising premiums accordingly, I don't know if it will make much difference in terms of actually changing behaviour.
Like, there should already be a lot of this kind of data out there to nail drivers to the wall post-crash, and you just don't really see it happening. Even when someone is killed, everyone involved basically shrugs, says it was a fluke, and tells the family they should get over it and move on (watch for the phrase "came out of nowhere" as a sign that everyone involved has checked out of a particular case).
And how much will consumers accept a car that tattles on them about their bad behaviour? People already lose their minds over provably-effective external automated enforcement measures which rely on plate reading like red light cams and average speed cams.