The name is based on the W-11 buses originally found in Karachi, Pakistan, which are a model of minibus famous for their entertainment value: decorated with lush designs and playing popular Pakistani or Indian music.
As a showcase of Pakistani culture, Z class tram Z1 81 was commissioned for the Commonwealth Games, and a team of W-11 decorators were invited to decorate the tram at Preston Workshops.
For the duration of the games it operated on the City Circle, playing Bhangra and Pakistani music.
[3] It is currently on permanent display at the Melbourne Tram Museum at Hawthorn depot since June 2015.
[4] Media related to Karachi to Melbourne tram at Wikimedia Commons