That sir would be awesome to pull down to the tailgate's in Tuscaloosa this weekend. Might need bigger tires though to get around through the quad and the grass there easily but otherwise that is an amazing thing you did with a wagon chassis.
LOL, the only thing I used from the wagon was the handle and pivot. the rest is 1-1/2" L-angle and 1" tube. he walls are 3" thick, aluminum clad, Styrofoam. They are leftover pieces of wall/roofing from patio enclosures that we install here, at work. So far it has held ice for 2 days and only melted about a quart or so (I've been keeping track in a bucket)
Don't worry, after the Punkin Chunkin this weeked, I will be welding another tube across the short edge to fit in my hitch receiver
http://www.punkinchunkin.com/