After several phone calls and email with Tesla Norway it was finally clear what the configuration page really is saying. One can book the hitch or you can order the 5 cm load carrier. A Carrier is only an attachment to a hitch that must be purchased later stage at Tesla or another carrier manufacturer. If you choose the tow hitch package you get towing hitch and the 5 cm load carrier. Again, ski/bike carrier has to be ordered after the vehicle has been received, but it's quick delivery they say :)