If you read about it recently, the music of Bruno Mars invaded Grab cars — not through the airwaves, but with the help of Nathan Hartono, Hirzi, Tim De Cotta, Sam Rui, Dee Kosh, Aarika Lee, Sara Wee, Joie Tan, and Calvin Phua.

Songs like '24K Magic' and 'That's What I Like' were belted out in select cars on a Sunday afternoon, where participants were allowed a free ride to the destination of their choice, in exchange of singing a few songs off the singer's gloriously funky album 24K Magic.

What ensues an afternoon of enthusiastic fans, some special guests, a missing driver, and even one passenger mistaking Hirzi for Nathan Hartono.

Watch the post-trip movie here: