A BMW Isetta has no rear seat. It is impossible to get five adults in there since the engine compartment is in the rear. Even if it were possible, the small, single-cylinder engine delivers, at most, 13 horsepower. With that amount of weight on board, the car would hardly be able to move. A high-speed chase would be out of the question.
In the last shot outside the ISIS office building, traffic is passing through the intersection. The last car, a red Cadillac, approaches from the left and stops at the green light, while the bus and a sedan from the right drive through the intersection under what should be a red light.
This should not be considered a Goof though, as crazy drivers exist in the real world as well as in a cartoon.
The last shot is a view of the building where ISIS is located. In the bottom left of the screen, some pigeons are standing on the sidewalk. Two cars seemingly drive behind the pigeons, and it looks as if the pigeons are on top of the car. This, however, is simply an illusion; it is not a Goof.