This is a Conestoga Wagon and literature says these wagons originated in Pennsylvania (U.S.A.), in late 1700s, and were pulled by a selected breed of draft horses, called Conestoga horses, often 17 hands high, a breed considered extinct. This wagon was capable of carrying 8 tons of stuff, through rugged territory. They were used for commercial purposes and also by early settlers, until the advent of the railroads.
He built the amazing undercarriage on this wagon, exactly like it would have been built, in reality. This entire project took him 95.5 hours to complete. The wheels (to me) are the most impressive, and were made one spoke at a time, in a special jig, with a metal band outside the rim. I made the (easy) feed sacks and bedrolls (inside), and canvas cover.
One side of canvas was left open for viewing. That's a feed trough hanging off the back.
Our Studio is small - if he rolls his chair back while I roll my sewing chair back, we bump. And lately, I even have my sewing desk expanded, taking up even more room! We need a bigger house to hold all these projects!