From the patch notes:
Space garage... you park in a garage, so.. a place where you park your spaceship? A spaceport?
Added new Priority Transport Terminals the Fleet and several space garages, which provide transportation between high-level mission areas such as The Black Hole, Ilum, Section X, and Makeb. Planetary shuttles on Belsavis, Ilum, and Corellia have had these transport options removed for clarity.