The wagon is pulled by two horses and is pretty deluxe. It comes complete with three secure lockboxes built into the structure. Adiel had it built in Silvergate, I believe, to replace the little one horse cart you picked up in the very first encounter. At the time the weight of the coins onboard alone was crippling it. Nevermind the fact that Farden had to stand guard over it any time you stopped moving for more than 2 or 3 minutes.
What's on the wagon is it's own topic that I try to keep nicely up to date. (That said I didn't update the new provisions. I'll get right on that.) It also lists the party funds.
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On Thu 9 Nov 2017 I dispersed lotsa coins from the party funds into individual character's pockets and put this info on your character sheets.
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Ch10 - Journey to Yggdrasil
A little bookkeeping.
Before the winter I'm going to assume you split up some of the coins. All four of you took 1,000gp and 10,000sp. I'm also going to deduct 2,200 silver to buy Ragnar and Ros horses, saddles, saddlebags, bit, and bridle so they won't slow the party down. Mord now has the Buckler +1 and the leather coat +2 natural armor. You gave the spirit realm book to Coal. I've update the cart item and your character sheets.
Sadly, it looks like all of my updates to Mord's character sheet have been overwritten. This includes the money listed above and the equipment taken of the summoners corpse. You can add the coins yourself. I'll see if I can dig up the list of new equipment.