The "Ark" Motor Camper
Built by cereal tycoon, W.K Kellogg, this huge camper has a wheel base of 198", 45 HP motor, six 36" tires and weighing in at 11K pounds. This behemoth camper is equipped with beds, tables, easy chairs, kitchen, bathroom, heater, a "refrigerator plant" and radio set.
This beauty can travel 30-35 mph on rough roads without discomfort to the passengers. A road home on wheels, Kellogg said that he went for the well ordered home essentials and didn't focus on "luxuries."
Seeing what he's got on board, I'd say that luxury must be a home essential for Kellogg.
From the Popular Science, March 1924. Pic one shows the vehicle and pic 2 shows the layout of the features.