Reisterstown E412 and S414 were dispatched for a report of a car into the back of a trash truck.  S414 arrived to find an occupant of the car heavily trapped.  The call was immediately upgraded to a heavy rescue box which brought T313, S322 (Pikesville) and S303 (Lutherville, for the crane).  The trash truck was lifted using air bags and S303’s crane and then S322 slowly pulled the car out from under the truck.   Crews were on-scene for approximately 90 minutes.  The patient was transported to Shock Trauma.