The man who plays Gus, the rapper on the bus, is played by Lin-Manuel Miranda. Lin actually attended Wesleyan University, the university that Lily, Ted, and Marshall attend in the show. The show's creators, Carter Bays and Craig Thomas, also graduated from Wesleyan.
The whole episode is narrated in iambic heptameters (except for a few variations, for example, a short rap segment)
This episode has the second lowest rating of the series, just behind Last Forever: Part Two.
After Marshall says he can walk that far, the song Marshall vs the Machines from S6 E4 Subway Wars starts playing.
Lin-Manuel Miranda is the writer for the Broadway smash musical Hamilton which is produced in New York