What needs to be done is this:

There are already laws in every state that provide for citing people who
"fail to pay full time and attention" to driving. Start enforcing it.

I don't care if a person is fiddling with the radio, eating, talking on a
cell, putting on makeup, eating, slapping their kid, or whatever.

If you ain't paying full time and attention to driving while you are
driving, you are behaving criminally, and deserve any punishment dealt to
you.

Steve