Watch Brian Johnson and Ringo Starr talk farts in Dave Grohl’s new touring documentary

What Drives Us, the Dave Grohl-directed documentary about life on the road featuring appearances from some of the best entries in his phone book, comes out tomorrow. In it, he interviews road dogs like Slash, Metallica’s Lars Ulrich, Flea from the Red Hot Chili Peppers, U2 guitarist The Edge and plenty more to get their tales from their time travelling on the eternal mile.

In a newly released clip ahead of the movie’s release, we see that Dave also took on one of the trickier bits of tour bus politics, namely flatulence. So, if you’re wondering what AC/DC singer Brian Johnson, Beatles drummer Ringo Starr and St. Vincent have to say on the matter, here you go…

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Dave has called the project a "love letter to every musician that has ever jumped in an old van with their friends and left it all behind for the simple reward of playing music”.

"What started as a project to pull back the curtain on the DIY logistics of stuffing all of your friends and equipment into a small space for months on end eventually turned into an exploration of, 'Why?’ What drives us?'" he says.

Check it out on Amazon Prime from tomorrow.

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