The Mustang GT is the V8 performance version of the Ford Mustang, the long-running American muscle car line first introduced in the 1960s. Its horn is a standard dual-tone factory horn rather than a musical tune, but car fans share recordings of it because the car itself carries so much status online. Clips like this spread through car edits, soundboards and short videos, where a short horn blast works as a recognisable shorthand for American muscle, speed and showing off without showing the whole car.