We used to clean our trucks back in JP, this used to take an hour for each truck. Now we clean our trucks on site and got it down to 30 minutes or less, saving on our labor and driving time (until we get our commissary).
The highlight is finishing the night mopping the floor. We use the hot water from the soup warmer with degreaser and soap added, a great deck brush scrub, drying with towels, and wah-la.