Everything except for actions made to maneuver a car on a road is literally a distraction. No matter how small or how large. Its up to the DRIVER to say whether or not those actions IMPAIR their ability to maneuver the car correctly.
Putting it on speaker is no different, becasue most people still hold it up like a CB radio becasue the mic and speakers all suck ass on phones… sooooo why not just hold it to your ear? If you are driving an automatic trans, you dont need 2 hands at all times, even people with driving talent can drive a standard with one hand. Hell I have a friend without an arm and he drives a manual AND rides a motorcycle! And its his right arm thats missing!
What causes accidents with cell phone calls are retards that get so engulfed with the calls they zone out. SAME people zone out talking or arguing with people inside the car. The phone isnt the basis for the accident, its driver awareness CAUSED by their inability to focus becasue they are easily distracted. The phone call is a gateway to distraction, like all my other examples.