Willie Nelson's "On the Road Again" just got a superstar makeover.

Days before Carpool Karaoke debuts as a standalone series on Apple Music, James Corden's braindchild has released a brand new trailer featuring the likes of Miley Cyrus, Ariana Grande-gone-green (can someone make sure she's okay?) and enough additional star power to light up Hollywood Boulevard.

In the clip above, Miley jams out with family members, Gwyneth Paltrow experiments with some other-worldly glowstick-raving and Shaq and John Cena battle for space in a tiny coupe.

Carpool 2.0 will offer up a total of 16 celebrity pairings, and the trailer confirms as duos: John Legend and Alicia Keys, Chelsea Handler and Blake Shelton, Billy Eichner and Metallica, Jeff Gordon and Michael Strahan, Shaq and Cena, Trevor Noah and Shakira and more. New episodes will drop on August 8.

Corden said during the Television Critics Association’s Winter Press Tour in January that the new amped-up series was an answer to popularity among celebrities — entertainers who aren't officially singers continually reached out to appear as guests, he noted.

"So many people get in touch with us, big name movie stars, saying they'd love to do Carpool Karaoke," he said. ”Here, it's about taking those people who aren't musicians necessarily.”

Photos From Ariana Grande's Dangerous Woman Tour: