A hot rod is a modified car, typically an older model, that has been enhanced for increased speed and performance. Hot rods often feature powerful engines, custom bodywork, and unique modifications to improve aerodynamics and handling. The culture surrounding hot rods originated in the United States in the 1930s and 1940s, primarily among car enthusiasts who participated in street racing. In the movie "Hot Rod," the protagonist, Rod Kimble, aspires to become a stuntman and showcases his hot rod as part of his adventurous spirit and quest for respect.

In slang, "hot rod" refers to a modified car, typically an American muscle car, that has been enhanced for speed and performance. The term originated in the 1930s and became popular in car culture, particularly among enthusiasts who customize their vehicles for racing. In the context of the movie "Hot Rod," the title reflects the protagonist's passion for performing stunts and his desire to become a professional daredevil, paralleling the thrilling and rebellious spirit associated with hot rods.

In "Hot Rod," a significant portion of the dialogue and scenes were improvised by the cast, particularly by members of the comedy group The Lonely Island, which includes Andy Samberg, Akiva Schaffer, and Jorma Taccone. The film's unique humor benefited from this improvisational approach, allowing actors to bring their comedic instincts into the performances. While the script provided a framework, the spontaneity of the actors contributed to many memorable moments throughout the film. This blend of scripted and improvised content helped shape its distinct comedic style.

As of October 2023, "Hot Rod" is available for streaming on platforms like Amazon Prime Video and Paramount+. Availability can vary by region, so it's best to check your local streaming services. Additionally, it may be available for rental or purchase on platforms like iTunes, Google Play, and Vudu.