ohh.i see the basic_car in object viewer it is fun!! i see many different !!! my car surface and meshes are different .the basic_car meshes had 5 part:
1:basic car.opr
2:left wheel
3:front wheel
4:back wheel
5:right wheel
note:whene i select for example basic_car.opr the car's main body selected.(like my car)
but whene i select one of wheel for example front wheel the dommy apear in the middel of car(basic_car)how can i set it?
but my car meshes just have one part! it is default!!
so i think my problem depend on bad exporting from 3ds max 2009?!
yho or where can i find my answer? what is the standard method for exporting car(dynamic object)??where can i find

(i sure my problem depend on bad exporting from 3ds max 2009!!!