I continue to tell people that Kill Bill's debts to other films are totally intentional and interesting. Tarantino alludes to film history like John Milton alludes to poetic history. Because he wants to stake a big claim in the genre he is working in.
This is the song Grease Lightning from the musical Grease. Grease is a musical about a summer fling between a nice girl and a cool guy and whether than fling can translate into the rigid world of high school cliques in the 1950s.
About a minute in you will hear John Travolta call the car "a really Pussy Wagon." Thurman's car that she gets from buck is the prominently labeled Pussy Wagon.
Though the allusion here is slight I still think it worth talking about. For one thing Tarantino is obviously a huge John Travolta fan, and successfully revived his career for a minute in Pulp Fiction. Second, Tarantino is on record saying that people who do not like violence in movies are the same people who do not like dance sequences in movies. The musical is how he justifies his love of violence in purely aesthetic terms, just something very "cinematic," as he says. He is not making a social commentary. He is making a fun movie, a work of art, an aesthetic thing. So I think the allusion to Grease is actually kind of important given the orgy of violence that is about to follow.