When Auden walks straight out into the street, one car barely misses him and two more (blue car and the same orange car that Nada and her band arrive at the theatre in) skid to one side and almost crash. In the next shot, the blue car is still there, but the orange car (which should have been blocked in by the blue car) is gone.
During the reprise of "Hot Shot", when Reggie is lying at the front of the stage singing, a person with a distinctive checked cloth cap can be seen in shots from the audience side, but isn't there in shots from the stage side.
When Susie is changing clothes in the street to go to the party, the camera follows her old clothes in the street and pans around to Susie in her party clothes. As the camera pans around to her, you can see in the bottom right corner the track the camera rolls on.