The lithium-ion batteries are liquid cooled and packaged in a 4-inch thickslab that covers the entire floor pan of the car for a low center of gravity and a near 50-50 weight distribution.
The second floor was divided several big rooms, including a living room with large glass doors that open onto the front lawn, a dining room and an open kitchen centered around an island topped by a thickslab of lapis lazuli.
The basic design is the same -- it's a chunky slab of thick, ribbed, soft-touch plastic and rubber, with a sizable chrome screw holding the backplate in place.