My problem with smoker is that it takes 12 year for a cigarette butt to go out of the ecosystem.
So When at night some smoker drops it out side of his window I Always give him dipper.
Really typing a txt or dialing a no. takes your attention like nothing else. Its not about just hands being occupied.
I think equvelant to that would be a mother having little child in backseat, that can take you mind away from the road like nothing esle too. :)