Near the end of the film when Gunn is escaping in a 1961 Ford Falcon marked "Security Patrol", in one shot a wire is taped down the right side of the vehicle, seemingly powering an add-on set of headlights attached to the car, while the car's original, single headlights are off.
Out playing golf, Laurento (Stephen McNally) and Capelli (Martin Landau) are on the putting green and Laurento is lining up his putt while his bodyguard tends the pin. But he's clearly on a tee box, not a putting green. You can see the actual green off in the distance. You can also see divots golfers have made on this tee box they tried to pass off as a putting green.