Some of the biggest musical moments of 2015 came from the inside of late night host James Corden's car. So it's fitting that he'd get one last Carpool Karaoke in on his way to the 2016 Grammys. Who did he bring along? None other than Justin Bieber. Corden carpooled with Justin Bieber and the duo performed the Mark Ronson/Bruno Mars song "Uptown Funk." Hilarious!
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