by Michael_73_
I remixed the model to be printed on its side with the wheels and axles. Print as oriented, no support needed (I used .2mm layer height).
IMPORTANT: This model doesn't load correctly on Slic3r (at least for me), I have no idea why and tried using several model repair tools but they either found no issues or were unable to repair the model. The file opens just fine and slices perfectly using Cura, so if you are having issues just use Cura.