Super Pumped: The Battle for Uber by Mike Isaac:
But the crown jewel was the final musical guest. As Uberettos lined the venue inside the Palms hotel, the house lights went dark and the stage filled with smoke. A voice began to sing the first few slow bars of a familiar song. Then she appeared. Wrapped in a blood-red jumpsuit, sequins shimmering against the neon beams behind her, fog machines wrapping her in mist. The words started coming into focus, a hit all the twentysomething employees knew by heart: “Got me looking so crazy right now, your love’s got me looking so crazy right now. . . .”
Employees began screaming as the singer stepped into the spotlight. They realized what Kalanick had done: He got Beyoncé.