Rock & roll now comes standard with new Jettas, GTIs, Rabbits and Beetles. Or maybe it's the custom First Act GarageMaster electric guitar that comes with the car? Either way, the latest Volkswagen promotion from agency Crispin, Porter + Bogusky lets VW owners make their own sweet music—provided they know their way around the strings of their shiny new instrument. But novices need not fret, as the "V-Dubs Rock" website has everything newbies need to hop on the road to instant strumming, from an anatomical breakdown of the GarageMaster to private video lessons from Dweezil Zappa. Seasoned jammers can also get their share of the spotlight by filming their own music videos to upload to the site as part of a rollicking online battle of the bands to crown the one and only Uber Rock God.