I'll add a few quick stories:
Lady on my street uses a push broom to wash her car. Very course, rough surface push brrom. The car is a 2003 mecury grand marquis. You should see it.
A guy by my parents has a black cadilac catera, not sure what year. He dries it with a bathmatt, you know the ones with the rubber backing. "It keeps my hands from geting wet."
At a dealership a few months ago, I saw a guy put a rotary down on the pad. The floor was concrete, went right back to the paint
Another dealership, brand new Chrysler Crossfire in black. Chamois dropped on the ground, stepped on it, picked it up and kept going.
My favorite, because it is considered "the way to do it" in memphis dealerships:
Apply wax by hand on brand new car, remove with a rotary, full speed with a twisted wool cutting pad. You would NOT believe the swirls. "That wool brings out the shine."