Overview: During a drive around Los Angeles, James and Mariah Carey pass the time singing some rather familiar songs, including "Always Be My Baby."
Overview: James and Jennifer Hudson make the most of their drive to work singing a few classic tunes, stopping at her Hollywood Walk of Fame star and ordering from a drive-thru.
Overview: James and Justin Bieber carpool through Los Angeles singing some of Justin's classic songs, and James challenges him to finish a Rubik's Cube.
Overview: James and Iggy Azalea carpool through Los Angeles singing some of her classic songs and stop in to a bridal shop to try on wedding dresses ahead of Iggy's nuptials.
Overview: James and rock legend Rod Stewart carpool through Los Angeles singing some of his classic songs and surprise guest A$AP Rocky joins in for his hit, Everyday.
Overview: James and music icon Stevie Wonder carpool through Los Angeles singing some of his classic songs and Stevie suggests he and James start a group called the Wondercats.
Overview: James and Jason Derulo carpool through Los Angeles singing some of his hit songs before Jason gives James a dance tutorial and the two take over a star tour.
Overview: James Corden & Justin Bieber reunite to carpool through Los Angeles singing some of Justin's new hits, as well as classics like Alanis Morissette's "Ironic."
Overview: James and Carrie Underwood carpool through Los Angeles singing some of her popular hits, and a Wham! classic, and the two make a stop for some cowboy boots, hats and vests.
Overview: James Corden has Niall Horan, Louis Tomlinson, Liam Payne and Harry Styles join him for a carpool through Los Angeles singing some of their biggest songs and introducing a little choreography.
Overview: James Corden and Reggie Watts kick off a Christmas edition of Carpool Karaoke singing "Joy to the World" with One Direction, Stevie Wonder, Iggy Azalea, Rod Stewart, Carrie Underwood, Jason Derulo and Justin Bieber.