We have been using it as extra prep space in the kitchen for about a year. The desk is nice solid wood, and when I measured it, the surface was exactly the right dimensions for the wagon. So, I disassembled the desk:
I refinished the surface, which was gross and water/wine stained, with a homemade finish of mineral oil and beeswax:
Then I chopped the front legs down to the right height and partially reassembled the desk. Here's what it looks like right now:
The table will be made into cabinets next, with drawers and cabinet fronts. The surface will have a sink and a one burner stove installed, and voila! We will have a kitchen for the wagon!