http://download.hyundaigenesis.com/RegistrationPage.aspx?downloadfilename=billy.mp3 If you want it - apparently you can put in a fake name and address to avoid spam (most likely info on the release of the Genesis Coupe). This is the song: [ame="http://www.youtube.com/watch?v=LGjQ__10Vzs"]YouTube - Hyundai Genesis Coupe Epic Lap Commercial[/ame]
Another note - this song was apparently made specifically for the ad, and isn't available for purchase anywhere.
I think it's just Billy Corgan, not The Smashing Pumpkins. The opening credit sheet showed only Billy Corgan's name.
The video was edited by him, the whole deal is that people can edit their own clips, that was his. Music is by the band.