I agree with all of the above, BIgAl is right.
One thing that I expect is the car itself to have the pizzaria logo in lights on top of the car. Kinda a neighborhood watch thing. It is also good advertising for the store.
Also, if something went wrong between the store and the customer(lost, cold, soggy, etc...) I would expect the driver to be able to apply some kind of Service Recovery for the customer, ie, discount the pie, or something like that.
That is tough to do because, the owner mlight have a couple of drivers rob them blindly. Maybe to correct that they should have the customer call the store with the driver there on the porch, or better yet, let the driver call the store on a cellphone to say what the problem was with the customer there, and then the store manager could determine what Service Recovery is needed.
I think I want a satisfied customer, but I want a loyal customer MORE.