I would welcome such a ban, it would provide me with a legitimate excuse for not answering my constantly ringing phone when in the car. At the moment, people are always asking me why I didn't respond, and when i say I was driving they always say the same thing which is 'don't you have hands-free facilities in the car?'
I do, but I don't use it these days. I once had a narrow escape when I was engaged on a hands-free call on a big roundabout in the Midlands. I missed being hit by a huge lorry by six inches, and it would have been my fault. That was my warning, and I heeded it. You simply cannot concentrate on your driving to the same degree if you are talking on the phone - at least I obviously can't. My wife is a different story - she can think about many things at the same time, as she repeatedly reminds me.