iPhones have Driving Focus built in now (https://support.apple.com/en-us/HT208090 https://support.apple.com/en-us/HT208090) which is a good start but I expect a

iPhones have Driving Focus built in now (https://support.apple.com/en-us/HT208090 https://support.apple.com/en-us/HT208090) which is a good start but I expect anyone who is happy to use their phone at the wheel will disable this pretty quickly.