Factual error: Smith shoots the windshields of both his own BMW and the van which is chasing him. The thing is, windshields on modern cars are made from laminated glass, altering between glass and plastic. When a windshield is shot, it will never shatter, unless you are driving a pre-1950's car.
Continuity mistake: At the beginning of the film, Smith escapes with the baby on a bus. He takes off his sock to cover the baby's head. Cut to a shot of him pulling the sock over the baby's head, then the camera angle changes to a close-up of the baby being held by Smith with the sock on his head; cut back to the original camera angle and he's still pulling the sock on the baby's head.