[pascal] // chassis body
Body[0] := dBodyCreate (World);
dBodySetPosition (Body[0], 0-580, cSTARTZ+cWHEEL_OFFSET, Index*5.5-417);
dMassSetBox (M, 1, cWIDTH, cHEIGHT, cLENGTH);
dMassAdjust (M, cCMASS);
dBodySetMass (Body[0], M);
Box[0] := dCreateBox (nil, cWIDTH, cHEIGHT, cLENGTH);
dGeomSetBody (Box[0], Body[0]);[/pascal]

thats how mines done. doesnt have senter of gravity atm tho :roll: