Summary

A little covered wagon... you'll just needs some horses to make it go.

Print the wheel 4x. The wheels are designed to be held onto the axle with a bit of 1.75mm filament. Just cut the filament to size and fit it in. If you scale this down, you will have to find another method to attach the wheels (like glue).

Print each part in it's current orientation and you wont need any supports.