freitasm: I think this is a great move. I've seen people completely disregard traffic regulations while on the phone - they can't change gears correctly, indicate, stop on the lights, etc.
I was nearly bowled over recently by some ignoramus who thought gas-bagging on the phone was more important than keeping their eyes on the road (and indicating!).
And I'm not into this "In need to be contactable 24/7" culture we live in.