Originally Posted by jspira

I second the recommendation for E.H. Harms.

BMW and other German car makers use Harms to ship tourist delivery vehicles over to the States.

The following article (Shipping the 335d) will give you some idea of (if nothing else) where your car will be on the boat.

Regarding TÜV, you will have to make some modifications to the car relative to lighting and a few other things. BMWs are more expensive in Germany than in the U.S. so you are still probably off taking it with you.

Also, if you are only going to stay for a year, you can leave the U.S. registration and number plates on (I believe).