strMod = "a3"; strPbo = "roads_f"; strLoc = "roads_new";
strModel = "highway_W14_A0_152_R5000";

obj = CreateSimpleObject [strMod + "\" + strPbo + "\" + strLoc + "\" + strModel + ".p3d", getPosASL this];
obj setVectorDir (vectorDir this);