1)Now take a minute to watch the video of the last 5 minutes of the final episode again http://www.youtube.com/watch?v=8hCsdjw3qrs
2) recall what Bobby says in the second to last video about being whacked: "You probably don't even hear it when it happens, right?"
Tony and his family were killed.
The black guys are out of place in clearly a white scene restaurant, and appear to both be reaching in the general vicinity where a gun is held...The strange guy heading toward the bathroom is given alot of visual attention during the closing moments of this epic series. I am convinced, after much speculation that the significance of the statement "You probably don't even hear it when it happens, right?" is entirely represented by the Black Screen.
Lets take into consideration that the final P.O.V. is: Tony looking up. His killer, who we see walking into the bathroom is out of his peripheral view. This means Tony was unexpectedly shot and killed.
The significance of Meadows troublesome parallel parking is simply a time-eating operation. This mundane encounter created a realistic preparation for the killer/killers. I am convinced Tony was Killed.
when questioned about a follow up movie- the creator of this show states he "highly doubts it"