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hes using MS3D, it only works in triangles, and a poly is just two triangles so it makes no differences what so ever to rigid body structures...
Quote: "(remember, I'm quite new to modeling so they might look a bit messy"
huhh, its not like hes going to be able to clean up mesh's properly especially if hes only just started. Of course thier'll be wasted polies but thats to be expected. Its actally not that bad, hes just used spheres for the inner wheels and head lights. The seperate mesh's used together arnt helping with the excess polies but they work so no real problem thier. Thoguh i do recommend to extrude out instead of new meshs. In most cases it will save on polies/ tris in this case.
The smoothing group error is due to the tris facing the wheels being in the same smoothing group as those on the edge. Since i no nothing of the UI layout of milkshape, google it to see if you can find a quick tutrorial on setting smoothing groups.
Keep at it, it will look very good when its finished.
-Con