Earlier in the movie, Rupert puts a lighted electric ice cream cone on the roof of the Twin Twisters diner, and as he and Carla step back and admire it, we see that the sign on the rooftop of the diner reads "Carla's Twin Twisters" - with the name "Carla's" appearing in twinkling lights. Yet a few scenes later when Rupert drives up on his motorbike, the "Carla's" portion of the sign is no longer there, and the sign reads only "Twin Twisters."