We cannot wait for this.

We thought we had peaked with Britney Spears on Carpool Karaoke. Although she did mime her way through pretty much all of it, we were still over excited at the sight of her sitting alongside James Corden for the viral segment. She joined a long list of singers who have jumped on board including Justin Bieber, Mariah Carey, Jennifer Lopez, Adele, Red Hot Chili Pepper and Coldplay. But if we could have drawn up a list of potential passangers Lady Gaga would have been up there. And thankfuly, last week our prayers were answered when it was revealed that she was filming with James. There has been no word yet on when that will air but just before that we've got a sneak peak at what's in store. Some eagle eyed passerby spotted Gaga and James dancing about to a song and managed to film it. They can be seen bopping along to Bad Romance before Lady Gaga spots the camera, rolls down the window and shouts, "I love you too" to the fan. All the while James is still giving it welly. Gas! The folks over at Metro have a video of it: