For Sweden delivery (also Norway/Denmark it seems), you can track the final 1-2 weeks through the transport company at
http://www.skandiatransport.se/sv/TrackTrace/Detail
Sweden delivery is shipped to the harbor Halmstad from Cuxhaven so at
https://www.hallandshamnar.se/hamntrafik/ you can check when the boats arrive from Cuxhaven to keep an eye at the first link if your car is offloaded from the ship. And the boats can be tracked at vesselfinder.com or similar sites as previous posts linked to.
Waiting for the delivery of my x5 45e within a week so did some research
To be honest somewhat surprised that so much information is publicly available. Also for other car brands and cars they keep in storage.