Mariah Carey Joins James Corden for Carpool Karaoke — Watch Video

In his first week, James Corden has been waterboarded by Jay Leno, awakened by Meryl Streep and “acted” opposite Tom Hanks. For The Late Late Show‘s new host, singing with Mariah Carey was just another “sweet, sweet fantasy” come true.

On Wednesday night’s episode, the British comic invited the five-time Grammy winner to drive with him to work, not only to sing with music royalty, but as a means of gaining access to the coveted carpool lane, thus avoiding L.A.’s heinous traffic jams.

Hit the PLAY button above, and watch as the bubbly host holds his own with Carey on classics such as “Always Be My Baby” and “Vision of Love,” and 2014’s “Thirsty.”