This simple vehicle export from 3ds Max and import to Unity tutorial demonstrates a method of modeling your vehicle for export to the Unity game engine by setting up the model in the Front, Top, and Left views so that it looks right, then adjusting the “Affect Pivot Only” Pivot 90 degrees around the X axis so that Y is UP (pointing to the roof of the vehicle). Using this technique, you can avoid having to reorient your vehicle and lock in the new values with xForm. So this is the better technique, and should be used instead of the technique I demonstrated in a previous tutorial.