VIDEO : Britney Spears Gave Uber Riders First Listen to 'Pretty Girls' Duet With Iggy

Before releasing "Pretty Girls" widely on iTunes and YouTube, Britney Spears debuted her Iggy Azalea duet inside custom Uber vehicles for several fans.
To help build online buzz for the dance track, Spears told her Facebook and Twitter followers on Sunday afternoon that they can listen to "Pretty Girls" before its midnight release by ordering car service via the Uber app ? though only in Los Angeles.