In a real restaurant, the dishes/pans are hand-washed.
Can't afford losing knives, pans, etc. for 90 minutes in a machine.
If you knew how to cook, Coke, it would be obvious that all utensils/knives would be constantly rotated in a drying rack as opposed to dishwasher...
http://www.youtube.com/watch?v=CPYfUUcl0PI&feature=related
bonus film for Coke:
http://www.youtube.com/watch?v=qL6KU75sC-A&feature=related