Can I ask the obvious?
What sort of maroons (thanks, Bugs) would set up a 'plan' to rob a pizza deliveryman? One could make more money mowing lawns or recycling aluminum cans, for crying out loud!
To put any thought and planning into an enterprize that will gross less than $25-$30 is absurd! Risk an armed robbery charge for pocket change? Or am I ignorant? Do Texas pizza guys carry a couple thou on them?
I think Body Bagger's comment has significant merit.