Approximate layout of the DownBeatMobile.
One thing that's different is the bedroom, which has one double-bed raised on a bunk over a second double bed (sleeps four, tightly). Another modification to the above layout is more storage space where the refrigerator and oven would have been. Even with the weird fuel cells and water-to-hydrogen system in the Winnebago Warrior, it's supposed to be generating about ten times the amount of energy that used to be needed to run a motorhome. Extras like the fridge and stove would take even more juice.
This vehicle is also designed with a minimum of interior lights, maybe two 30-watt bulbs over the front "living room" end, one 30-watt in the bathroom, and two more in the bedroom. Reading inside the Winnebago at night would probably hurt your eyes, unless you have a candle or lantern going besides the lights.