2016 was the year we all went a little bonkers for James Corden's carpool karaoke. The Late Late Show host's carpool segment featured some of the biggest names in the biz like the recent Bruno Mars, Madonna, First Lady Michelle Obama and Jennifer Lopez. But it seems Corden has been working on an awesome Christmas melody for us all year -  and it has to be close to the best carpool video we've ever seen. 

The Christmas sing-a-long kicks off with the queen of the festive season, Mariah Carey, who begins singing her 1994 tune "All I want for Christmas is you" with Corden (the song happens to be the most streamed Christmas song on Spotify in Australia - go figure). The video then cuts to previous carpools from the year all singing along to the holiday hit, with Adele (who was brave enough to take on the Mariah high-notes), Selena Gomez, Nick Jonas and Demi Lovato, Gwen Stefani, The Red Hot Chilli Peppers, Chris Martin  and Lady Gaga making an appearance. Watch the full version here:

James Corden's Xmas carpool karaoke is the best thing you’ll see all day