Billie Eilish and James Corden put the pedal to the melodies in a new episode of Carpool Karaoke! During the Dec. 19 episode, the 18-year-old singer hopped into the passenger's seat for the classic segment as she and James sang some of her best hits, including "Bad Guy," "All the Good Girls Go to Hell," and "Ocean Eyes." While cruising around Los Angeles, the two also chatted about Billie's obsession with Justin Bieber before visiting the star's house for a quick tour. There, she gave James a look around before introducing him to her pet spider (which made the host freak out). Watch Billie and James hang out and sing at the top of their lungs in the clip above!