The front and rear casters weren't added yet in the screenshot, it won't actually balance on two wheels. The two motor and gearbox mock-ups are based off the Banebots datasheets, and mount directly to the base plate. The wheels we found online will have to be modified in some way to connect them to the shafts.
Here it is with an angle iron frame. Some example shell plates have been attached to the frame for reference. These plates will probably be waterjetted to create the openings for the drink filling mechanism, motor shafts, and interface panel. Almost none of the internals have been added in yet because the design of those are still being finalized.