The solution would be some feature in cars which are either mandatory, or would give you enough benefits to be worth considering even if you are an inconsiderate person who texts & drives.

And the punishment / reward could come after the ride: - you texted? Well it’s your third time this month, from now on you’ll get a ticket each time you do it. - you installed the feature, so you get a bonus check from your insurance company every month.

The tech exists already: - a new mercedes have precise realtime eye tracking that makes the hud projected on the windshield look to be exactly in the same place no matter how you move your head around. - there are devices which track your driving habits (are you speeding, driving erratically, etc..), this helps you when you have to deal with an insurance case.