When Clarkson Hammond and May are doing laps of the track, they fill the cars with water before doing their laps. When James May's car is being filled up, a bassline starts playing with a feminine humming, which plays for about 20 seconds, until Clarkson "checks" to see if James' snorkel is working. I've looked at other threads for this episode, but this song isn't listed. Does anyone know what it's called? (For reference:, the song that plays here).