Was unable to get back into the studio one day because he forgot his ID card. The security guard would not let him in until James Corden came up with the idea to mimic one of the show's billboards. This happened before the first episode was made.
Soccer legend David Beckham made an appearance in order to help his pal James Corden "crack America."
Not commonly known is that the Carpool Karaoke sketch that became a huge hit on his late show did not actually originate there. Corden attributes the inspiration for this to singer George Michael who on an episode of the UK's "Comic Relief" (2011) joined Corden for an in-car singalong of a medley of Wham! hits like "Baby, I'm You Man," For the debut of Carpool Karaoke on Corden's American Late Late Show, singer Mariah Carey was the first guest to agree to the experience (March 2015).
There are multiple crew vehicles in front and behind James Corden when filming Carpool Karaoke segments.
In addition to its predecessor show The Late Late Show with Craig Ferguson (2005), the series drew much of its creative staff and technical crew from the defunct series Chelsea Lately (2007) and The Pete Holmes Show (2013).