Brand MarketingAudi Asks Viewers to Choose the Ending of Its Super Bowl SpotThree versions of VB&P's prom-night adBy Tim Nudd |January 23, 2013ShareBy Tim Nudd |January 23, 2013Share Audi is letting viewers choose its Super Bowl ad this year—or rather, the ending of it. Venables Bell & Partners in San Francisco has created three different endings to a 60-second spot about a teenage boy on prom night. This Friday, from midnight to midnight ET, viewers will get to see all three versions and vote for their favorite. Audi is tallying the votes on its YouTube page. The winning spot will be announced on Saturday. UPDATE: The "Worth It Version" of the commercial won the popular vote. See below. The winning spot will then run on YouTube before the game and air in the first break after kickoff. It will advertise the automaker's new 2013 Audi S6 performance sedan. Audi's 2013 Super Bowl spot: The runners-up: VB&P created a vampire-themed Audi spot for last year's game, in which the S7's LED headlights proved to be a real downer for bloodsuckers at a party. See that spot below. Audi's 2012 Super Bowl spot: Adweek Adweek