The sound comes from Watch Dogs, Ubisoft's open-world action game set in a fictionalised Chicago, where players can drive vehicles and encounter street vendors including a taco truck. Its horn stands out because it is not a standard car horn but a distinctive food-truck jingle heard while exploring the city. Clips of in-game vehicle horns and ambient city sounds have long circulated among players and editors, who reuse them to add humour and recognisable game atmosphere to videos. It remains useful because the tune is instantly associated with street food and casual city driving.