If you watch this video you will see how this guy deals with being parked in by another car. It looks like this video is from Europe and this guy has ad his car parked in outside of the block of flats were he lives. The video is a little long so I advise you to watch the first part were he gets frustrated and starts to pound his fists on the other car. Then jump ahead a few minutes to watch him ram the his own car into the other car multiple times. Each time the car blocking his exit moves just a little bit further out. Finally, after quite a few knocks he gets his car free and is able to drive away. My advice to drivers parking in another car, make sure you don’t double park in a car that is crappier than yours.

From YouTube.