Revealing mistake: In the scene where Max flips the cab, after it comes to a stop and you see Vincent hanging in the back seat, you can see the yellow "rollcage" bar under his shoulder. (01:32:00)
Revealing mistake: In the train scene if you look closely at Vincent's ear as he steps off the train ready to shoot Max and Annie, it looks like he has an earpiece or some kind of small blood pack in his ear. (01:44:05)
Revealing mistake: In the scene in the morgue, you can see the carotid artery beat on the "body".
Suggested correction: He could, in fact have an earpiece/hearing aid in place, and what with the wild night he's been having, the accident and all, a blood pack is not out of place either.
dizzyd
It's visible that just a little amount of blood dried up in the ear. Not any earpiece or blood pack.