If someone can make tiramisu while driving.......wow, I'd be impressed.
Yeah - when your driving you should be focused on - well driving. Incredible.
Some people can manage the cellphone while driving - if its hands free (dialing as well) and they can manage to hold a conversation without hand gestures (which - on a phone - always makes me laugh - you trained dog).
Incurtious drivers - damn it signal, don't jocky between lanes, if your in the passing lane and you are not activily passing anyone - then get over to the right (unless you like to be a bullseye for cops - I love trailing speeders who hang out in the left hand lane - I can't tell you how many times I've watched them get pulled over...and I just wave as I go by)
Don't speed in residential areas, unless you like killing pedestrians.