The boxes are now the wheels of the kart, so it is no longer flat and boring. There was more fine tuning, like the kart is no longer floating, and off the origin. Here is the updated kart’s repo: https://codeberg.org/provectus/HurdKart.
It’s a bit banged up but I think the patina gives it character. At some point I really need to swap that aftermarket rubber strap out for a NATO strap or a nice steel bracelet though