When Annie steals the car it has German license plate F CA3B7. When she dumps it it has Austrian license plate W 74570A.
When Joan identified the picture provided by Auggie of the woman potentially meeting with Henry as being Jai's Mom, Joan said she worked for a company doing business with the European Exchange. In an earlier season, Jai's mom was said to be a successful neurosurgeon.
All the scenes playing in Frankfurt are actually shot in Vienna - Trams passing by, the parking garage, street names, etc.