Getty Images
Metallica is in another promo for the new "Carpool Karaoke" series. The band is seen belting out Rihanna's 2012 song "Diamonds" in the latest YouTube clip. The new Apple show will include 16 celebrity pairings, riding in cars. Previous clips showed Metallica doing "Master Of Puppets" in a car and "Enter Sandman" in a supermarket.