Other mistake: King Arthur is on the far right of the scene as Guinevere is led away by the guards and he nods at someone off camera, asking them if it's OK to start acting as the camera moves around.
Other mistake: At Marine Stadium, in the shots facing Sam and Duster together, particularly before the race begins when they mention Goop, note the blonde-haired boy seated two rows behind them. This boy repeatedly lifts his hotdog to his face and amusingly pretends to take bites and chew, all the while his hotdog remains whole the entire time. (01:23:25)
Other mistake: Ponty follows the instructions of the titular book, which follows the logical progression through the corporate ladder. However, when he becomes VP of advertising, he is reading from the very first pages.