Nice van! FWIW, the two generators are Honda EU2000's with inverter output that can be paralleled. If you just need 2kW or less, you can run just one, saving gas and noise (and they're the gold standard for quiet). If you need more you can run both on the same output line, unlike most portables.
There's a class B RV maker that uses that same roof, or one very similar. Great West, maybe??? But all I've seen have a large fixed window in the front recessed area. Is that a small Sportsmobile logo high on the rear, by the 3rd brake light?
Nice find! I'd have blurred the pix, drooling on the camera....
Jim H.