There is going to be an XBOX360 sponsored Forza 3 event at the Audi Forum in NYC. I just registered, it doesn't look like any special codes are required.
http://audiexp.com/
Oh, and yes I noticed the HUGE typo in their logo, that guy should be fired. It's Audi Forza Challenge or AFX as it's abbreviated, but the site is called AXF24
http://audiexp.com/
Oh, and yes I noticed the HUGE typo in their logo, that guy should be fired. It's Audi Forza Challenge or AFX as it's abbreviated, but the site is called AXF24