Dunno mate. I thought someone might have replied by now - maybe that road isn't much used by cyclists?
I know the two areas you refer to, and I agree they'd be a little hairy on a bicycle given the usual speed & attitude of the typical Melbourne motorist.
Riding that road myself, I'd be tempted to look over my shoulder frequently and wave a large handgun around......at least that way you'd have a chance of levelling the threat equation.
Good luck anyway. Seriously though, I'd be looking for an alt route if I were you.
Do you really need a fvcking law to tell you not to text & drive?