but should you be doing many more things while driving? (the answer is no)
It seems the concept of cars also change:
https://www.youtube.com/watch?v=5X9XyHHTTQI
I watched this in the morning today, and in the 38 minute ride, the guy was mostly doing other things. Recording a video etc. In the whole ride, I think he only did something related to "driving" for a few seconds.
Being distracted during a phone call doesn't pose a risk of grievous injuries or death to yourself or others. Unless the nature of cars fundamentally changes, they should not under any circumstances be cool entertainment devices. Your focus should be on your mirrors and the road ahead. Full stop.
Computers are extremely good at calculating physics. And they never get distracted.