In all of the Casino scenes, the same names are paged over and over.
During the roulette scene, when 17 Black is called, from Jim's point of view he has 6 stacks of white chips, then the next view shows that he has only 1 stack of white chips when his bet is paid off.
During the road chase the shadows change back and forth throughout. At times they are long (showing that it's late in the afternoon) and other times they are short, which would make it noontime.
When Jim and Susan are driving from Las Vegas to Reno, there's a scene where the sun is directly in their eyes, even with the sun visors down. Since the trip is mainly North by North-West this would not have occurred.
However, there are two stretches where you the road runs due west and the sun will be in your face if you are driving either stretch near sunset.
However, there are two stretches where you the road runs due west and the sun will be in your face if you are driving either stretch near sunset.
When Susan and Louise are fleeing in the Camaro, the two closeup shots of the speedometer show a Mopar instrument cluster and steering wheel.
In the elevator Jim tells Louise to go to the basement, get in her car and go home. Only problem is they came to Las Vegas together in his car.
Jim makes a mistake when he explains the house odds of roulette. He says that because of the 0 and 00 on the wheel, people who simply bet on even/odd or red/black will lose if either of those numbers come up. He says that gives the casino a 6.2% advantage; it's actually 5.2%. This is calculated by the total number of possibilities (1-36+0+00=38) by 2, which equals 5.26%.