by Michael_73
I heavily remixed the model to be printed at once, on it's side, and with the wheels built in with an axle. Print it as oriented, no supports, and .2mm layer height worked for me. Scaling it down may cause the windshield to not print properly.
IMPORTANT: Slic3r fails to slice this model, it imports as inside out and cannot autorepair it, I tried repairing it in other tools but they failed. The original model was not meant to be printed as one piece and it seems to have caused some manifold issues. ANYWAY, Cura slices the model just fine, so if you're having trouble with slic3r, try using Cura.
