That wagon is about the neatest thing have seen for a long time! Martin, maybe he would share his instructions with you, or even for a small fee. Sure would save the setting up and dismantling time, talk about a time and frustration saver!
Have to say, were it me, would not have the upper and lower drop-down shelves, screen in the windows & door, have it on the ground, and make it a summer kitchen for canning, maybe would need to be a tad bigger, not sure, but...would think had died and gone to heaven

G