Continuity mistake: When Stanley wakes up after his second night as the Mask, he is holding the mask. In the next shot, the mask has moved further up onto the pillow and Stanley isn't even touching it.
Continuity mistake: When The Mask is being frisked at the park the cops find a picture. Kellaway holds it with one hand, but in the following shot he is holding it with both.
Continuity mistake: When The Mask paints the flush handle, near the end of the movie, watch the far left hand side when it shows Tina and The Mask. The Mask is shutting a door on the tree where the flush handle really is.
Continuity mistake: When Dorian dismisses his charges to capture the Mask for 50,000.00, Tina and Dorian chat. She is about to light her cigarette but doesn't. In the next cut away there is smoke in the air but she still hasn't lit it yet. As the scene continues you only see smoke when Diaz has her back to the camera.
Continuity mistake: The "loaner" car Stanley picks up at the mechanics is a 1951 Studebaker Champion. However, the car that falls apart on the bridge is a 1950 Studebaker Commander.
Continuity mistake: When The Mask escapes the club shootout, Dorian is left shooting at the air. He then gets tired and put his gun down. When the police arrive, he somehow has his gun raised again.
Continuity mistake: When Dr. Neuman is talking about the mask, he turns it sideways and taps it with his fingers. In the following shot the mask is lying face-up.
Continuity mistake: When The Mask first visits the Coco Bongo and dances wildly with Tina, they perform a series of impressive manouvers and The Mask then dips Tina and holds her in that position. At this moment, Tina is revealed to be a stunt double, not Cameron Diaz, just before the camera zooms into a close up of Jim Carrey.
Chosen answer: It's an old car, so obviously a numbr of things could be wrong with it, like the clutch or the engine. Faults with either of these things would cause a car to brake in this way.