hit (spoilers)
The hit at the end of the film is messy. The three occupants of Tony's car are all badly wounded, but maybe they'll all survive. But any one of them, or two, or all three, might easily have been killed. If the idea was to kill Johnny Boy, the job could have been finished when the car had stopped, but wasn't. What was Michael's idea? To kill Johnny Boy? To kill the others too? Did Teresa really piss him off that much on the staircase? What sense is there in what he does, or tells the gunman to do? It all seems, well, hit-or-miss. Whatever it was he intended, in the final shot of Michael he doesn't look entirely pleased by the outcome. But why exactly?
"I beseech ye in the bowels of Christ, think that ye may be mistaken."