So, Infiniti has a promotion right now where a current owner referring a friend to buy a new Infiniti will get the current owner $150 and the new owner $500 in American Express gift cards.
Here are the details....
http://www.infinitiusa.com/rewards
You have to get your car through an infiniti dealership between March 23, 2009 and June 30, 2009. Send me a PM if you are interested so we can do this together. You need a code for this btw.