While the two mob men are being chased by Eric Roberts' character, the rear view mirror in their car changes position suddenly.
At just after 27 minutes when the car chase ends and Eric Roberts is firing his sniper rifle at the two gangsters in the background you can see a crowd just calmly standing around watching the film being made though supposedly a guy is shooting right in their direction with a rifle.
When a car crashes into a caravan and flips in the air you can clearly see the ramp in shot.
While supposedly set in New Jersey there are California style street signs everywhere, palm trees, and the occasional California license plate, as well as Mexican fruit stands.