I know another Chrysler employee who is in the same boat (pardon the pun), and also waiting for an '07 to be shipped from Europe. I was under the impression that the port was Bremerhaven, Germany, rather than Belgium.

Tracking info I was given for that car was:

'Booked On Vessel' on 4/19. and
'On Vessel Clean' on 4/25

Not sure exactly what that means, but I would guess it means those cars have been on their way (to Baltimore?) for about a week. My guess is that they won't land for the better part of another two weeks - around mid-May.

Hope this clue helps.