What do we do?

[harm_less]

Agree with doing defensive driving tests, perhaps done every 3-5 years.

We might also consider:
Raising the age at which people can drive - our brains aren't fully functioning till mid 20's, although changing it to 25 would cause chaos, we could raise it by a year or so.
Making tests tougher
And perhaps even removal of car if found using cellphone while driving - or something which would actually prevent idiots from using them while driving. Maybe someone can invent cellphones which will not function in a moving car.

Technology is actually moving in the opposite direction. Our car is paired with my phone so it the phone can serve as a 'key' to unlock and operate the car. The car also uses the phone's Spotify subscription to provide in car music content and texts or voice calls use the car's display screen or audio system to allow the driver to access these communications 'hands free'. Why should I be deprived of these features because some fuckwit lacks self responsibility.

Using tech to limit people's use of their belongings is akin to imposing blanket health and safety measures on all people because of the mindless actions of a few. Effective policing and penalising of those without the brains or responsibility to behave in a socially exceptable manner is a far fairer approach.