It's totally Slash, haven't yall seen the commercials? There's also someone from Spinal Tap, and John Mayer, but both of them disrespect the car (Mayer scrapes his guitar on the side of the beetle, and the Spinal Tap guy is standing on top of the Jetta)
***[Total speculation, but hey, why not?]***
***[Total speculation, but hey, why not?]***