Corden found Martin trying to hitch a ride to San Francisco -- where Coldplay is rocking the Super Bowl 50 halftime show -- and after begrudgingly agreeing to give the front man a lift, the two embarked on a 400-mile road trip that was one of the most adorable things ever.
If you didn't like Martin before, there's no way you won't fall in love with the 38-year-old singer after this. From not understanding even the most basic aspects of "American football" to the humble, unassuming way he buys lemonade from some kids on the side of the road, Martin seems like he'd be the absolute best road trip buddy.
Perhaps the most touching moment of the whole bit came when Martin busted out his mini electric keyboard -- which he said is the instrument he'd be using at the upcoming halftime show -- and delivered a heartwarming tribute to David Bowie.
Serenading Corden, Martin performed a low-fi rendition of Bowie's 1977 hit ""Heroes,"" that got the guys kind of misty eyed.
"Oh! Great song," Corden beamed.
"Thanks, Dave," Martin added, saluting the late music icon who died on Jan. 10 after an 18-month battle with cancer.
What set this "Carpool Karaoke" apart from past segments – like Adele’s rap-filled romp -- is the massive scope. Unlike Corden's previous goofy adventures around Hollywood, this time the two entertainers really did embark on an epic, long-distance road trip.
That meant bunking up in a motel, which, of course, lead to the two in spooning in a twin bed while wearing flannel pajamas and singing Coldplay's "Fix You."