The term "911 GT1" functions as a proper noun. It serves as the specific, capitalized name for a particular model of high-performance automobile, a tangible object, manufactured by Porsche.
Grammatically, the phrase operates as a single nominal unit. It is a compound proper noun where "911" designates the model series and "GT1" specifies the particular variant, named after the FIA GT1 racing class for which it was developed. The term does not function as an adjective, as it does not modify another noun (e.g., "a 911 GT1 engine" uses it as an attributive noun, but the term itself is a noun), nor does it represent an action like a verb. Its sole purpose is to name a specific entity.
Establishing "911 GT1" as a proper noun is fundamental because it dictates that the article's main point is the vehicle itself. The content should focus on the attributes, history, technical specifications, and motorsport legacy of this specific car. The article becomes an exposition of a singular subject, rather than an exploration of a general concept or quality.
