During her fares, under the disguise of "Sam," she talks to her customers about her aspirations to one day become a singer. She even tells them that in order turn her passion into a career, she's been touring the country with her ex-boyfriend's brother. Awkward. To show off her pipes, she even invites her customers to sing a Camp Rock song with her.
Some of her fares seemed to be more interested in the Jonas Brothers and one even told Lovato that she thinks Selena Gomez is a better singer than Lovato. Umph. Another one of her customers enjoyed the Carpool Karaoke Lovato did with Jonas and James Corden. Sam thought Lovato was really "annoying," though. After some time getting to know each other, it was time for the big reveal.