The train is labeled as A113. This is an inside joke, an Easter egg in animated films created by alumni of California Institute of the Arts, referring to the classroom used by graphic design and character animation students including John Lasseter and Brad Bird.
In his miniature city, Stan named the meter maid Rita. This is a nod to The Beatles song 'Lovely Rita Meter Maid'.
"The Man who Built the World in his Basement" is a parody of "The Man who Broke the Bank at Monte Carlo" by Fred Gilbert.
Dr. Ray's last name is Petit, the French word for small.
Coming home from the wine tasting, Roger is dressed as Paul Giamatti from the wine-themed film 'Sideways.'