Annie Potts (Meemaw) considered buying a Mazda Miata in real life during her time on Designing Women (1986). Prior to the filming, she was overjoyed when Chuck Lorre told her that she was going to drive one in this episode, and into the future.
The second episode to include Amy Farrah Fowler as part of the narration. Also, the first episode in the series to actually show adult Sheldon (and Amy), though only in a picture.
The Incredible Universe location shown in the last scene is located in Tempe, AZ, and was one of 6 (out of 17) stores that was bought by Fry's Electronics before they ceased operations in 1997. Fry's itself would go out of business in 2021.