You can find pictures on
This is what Suksit said:
He has 220v inlet at the end of the truck, so the whole van is powered. Water-usage sensor pump feeds the water from a tank under the truck to the whole bar, with no waste tank, just a pipe and down to the street drain.
He always park at the same place, but he has hydraulic to level the whole van and later put a clutch or two.
He is a carpenter. The whole make-over cost about 5000 EURO without espresso machine and grinder.