I had a job recently where I had to bring out 50+ wraparound fixtures, 10 ceiling fans, all the switches, receptacles, plates, plus ladders, a table (that comes in very handy vs. putting fans and fixtures together on the floor) and other misc. items needed to finish up this place. All that would never have made it in one trip in that thing, but my trailer was only maybe half full.
I think that van will possibly fit into my trailer.
I forgot I also had 5 or 6 cases of 4 foot lamps, and several emergency lights and exit signs also.