Here's my take on all this, for whats it it's worth.
Eventually enough deaths or a horrific tragedy, a school bus, a car through a crowd, soccer mom and her kids killed due to texting or cell phone use will grab the nations attention. The media will act like it's a new found issue, people will demand action. Politicians will be forced to do something which they probably won't. The fight will turn to which party can make the other look less caring, ultimately they'll just kick it down the road. The cell industry will offer blocking technology as an option for parents. Insurance companies will give discount for installing it or maybe even require it. The judicial system will require blocker as part of the punishment for be caught texting or talking. For new drivers and under 18-21 will be required as part to have blockers as part of driving privilege's.