James Corden recruited an assortment of 2016 Carpool Karaoke guests, like Adele and Lady Gaga, for a joyful performance of Mariah Carey's 'All I Want For Christmas.'
An Uber driver named Jonathan made sure his passengers had the time of their lives in his car as they belted out a famous Christmas song, props and all.
Mariah Carey stopped by the 'Today' show, where she answered questions about her kids, James Packer, but refused to discuss her rumored romance with Bryan Tanaka.