James Corden recently opened up about his amazing experience with Bruno Mars on ?Carpool Karaoke: The Series.? Corden stated, ?The one I?ve enjoyed doing the most, I think it was probably Bruno. Like, I really, I got a bit depressed afterwards? Because I?d been looking forward to it for so long and I?m such a fan. When we were done, I was like, ?Oh. I?m not gonna get to do that again,? you know, and so that was incredible.?