Last year James Corden surprised us with a star studded Christmas Carpool Karaoke on The Late Late Show, and this year he followed it up with a bigger one. He asked Mariah Carey to sit in the drivers seat as they sang her huge Christmas hit, All I Want for Christmas. But what we didn’t know, he has been working on this since January. He had past passengers like Adele, Gwen Stefani, Elton John, Lady Gaga and shockingly Red Hot Chili Peppers sing the Billboard Holiday Chart Topper with him and created this epic version of the addictive tune. Now we have a new Christmas Classic for the years to come.