There is typically a couple of days delay from when the vehicle departs the port to when it gets listed as being on a ship...and BMW uses several different shipping companies...
BUT, there is a decent chance that any USA bound cars currently at the port might be on one of the following W&W ships (if they haven't already been loaded):
Don Pasquale (departing 11 Nov)
Arc Independence (departing 14 Nov)
Morning Carol (departing 14 Nov)
I only searched the W&W schedules and I simply used Bremmerhaven to Brunswick (as I am doing a PDC delivery)
https://www.walleniuswilhelmsen.com/schedules