 Everything in the episode had to be redesigned, which included new sets and all of the characters had to be remodeled for their age. In most cases, the adults were made heavier, had a few lines added to the face and less hair. On Homer, the redesign was minimal, making him a bit heavier, removing one hair and placing an extra line under the eye. Homer also wears a shirt like George Jetson's. Krusty's design is based on Groucho Marx. The night sky was intentionally made a more reddish color in a subtle joke about how the producers thought the world would be much more polluted in 2010. Nancy Cartwright's Bart voice was electronically lowered a couple of notches.
