If you test drive a new Audi, you will recieve 33 free iTunes songs. You do not have to buy the car, just drive it. Its win-win. Anyways, you sign up for the offer, get the certificate via e-mail, present it to the dealer, and the Apple credits your account with 33 songs.

Note: You must be 21 or over and hold a valid state drivers licsence.

Here is the link: http://audiusa.com/a3_microsite/a3ms_itunes_form